diff --git a/qbs/modules/libclang/libclang.qbs b/qbs/modules/libclang/libclang.qbs
index 44096275b1b..e4253cc105e 100644
--- a/qbs/modules/libclang/libclang.qbs
+++ b/qbs/modules/libclang/libclang.qbs
@@ -55,9 +55,10 @@ Module {
 
     validate: {
         if (!clangProbe.found) {
-            console.warn("Set LLVM_INSTALL_DIR to build the Clang Code Model."
+            console.warn("No usable libclang version found."
+                         + " Set LLVM_INSTALL_DIR to build the Clang Code Model."
                          + " For details, see doc/src/editors/creator-clang-codemodel.qdoc.");
-            throw "No usable libclang found";
+            throw new Error();
         }
     }
 }
diff --git a/src/app/main.cpp b/src/app/main.cpp
index 90eae94f2bf..e9a863946a3 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -414,7 +414,7 @@ int main(int argc, char **argv)
     const QString &creatorTrPath = resourcePath() + "/translations";
     foreach (QString locale, uiLanguages) {
         locale = QLocale(locale).name();
-        if (translator.load(QString::fromLatin1(Core::Constants::IDE_ID) + "_" + locale, creatorTrPath)) {
+        if (translator.load("qtcreator_" + locale, creatorTrPath)) {
             const QString &qtTrPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath);
             const QString &qtTrFile = QLatin1String("qt_") + locale;
             // Binary installer puts Qt tr files into creatorTrPath
diff --git a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
index 188e19ae7db..e503c1078c7 100644
--- a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
+++ b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
@@ -37,6 +37,7 @@
 #include <QMouseEvent>
 #include <QScrollArea>
 #include <QSlider>
+#include <QStyle>
 #include <QToolButton>
 #include <QDebug>
 
diff --git a/src/plugins/android/androidconfigurations.cpp b/src/plugins/android/androidconfigurations.cpp
index 9720fda932b..3a31ca90af8 100644
--- a/src/plugins/android/androidconfigurations.cpp
+++ b/src/plugins/android/androidconfigurations.cpp
@@ -127,8 +127,7 @@ namespace {
 
     static QString sdkSettingsFileName()
     {
-        return QFileInfo(Core::ICore::settings(QSettings::SystemScope)->fileName()).absolutePath()
-                + QLatin1String("/qtcreator/android.xml");
+        return Core::ICore::installerResourcePath() + "/android.xml";
     }
 
     static bool is32BitUserSpace()
diff --git a/src/plugins/baremetal/gdbserverprovidermanager.cpp b/src/plugins/baremetal/gdbserverprovidermanager.cpp
index 84af4b5c3f9..fa18a024001 100644
--- a/src/plugins/baremetal/gdbserverprovidermanager.cpp
+++ b/src/plugins/baremetal/gdbserverprovidermanager.cpp
@@ -47,19 +47,13 @@ namespace Internal {
 const char dataKeyC[] = "GdbServerProvider.";
 const char countKeyC[] = "GdbServerProvider.Count";
 const char fileVersionKeyC[] = "Version";
-const char fileNameKeyC[] = "/qtcreator/gdbserverproviders.xml";
-
-static Utils::FileName settingsFileName(const QString &path)
-{
-    const QFileInfo settingsLocation(Core::ICore::settings()->fileName());
-    return Utils::FileName::fromString(settingsLocation.absolutePath() + path);
-}
+const char fileNameKeyC[] = "/gdbserverproviders.xml";
 
 static GdbServerProviderManager *m_instance = 0;
 
 GdbServerProviderManager::GdbServerProviderManager(QObject *parent)
     : QObject(parent)
-    , m_configFile(settingsFileName(QLatin1String(fileNameKeyC)))
+    , m_configFile(Utils::FileName::fromString(Core::ICore::userResourcePath() + fileNameKeyC))
     , m_factories({new DefaultGdbServerProviderFactory,
                    new OpenOcdGdbServerProviderFactory,
                    new StLinkUtilGdbServerProviderFactory})
diff --git a/src/plugins/bookmarks/bookmarkmanager.cpp b/src/plugins/bookmarks/bookmarkmanager.cpp
index 028c1462346..3ced12e1791 100644
--- a/src/plugins/bookmarks/bookmarkmanager.cpp
+++ b/src/plugins/bookmarks/bookmarkmanager.cpp
@@ -500,7 +500,7 @@ Bookmark *BookmarkManager::bookmarkForIndex(const QModelIndex &index) const
     return m_bookmarksList.at(index.row());
 }
 
-bool BookmarkManager::gotoBookmark(Bookmark *bookmark)
+bool BookmarkManager::gotoBookmark(const Bookmark *bookmark) const
 {
     if (IEditor *editor = EditorManager::openEditorAt(bookmark->fileName(), bookmark->lineNumber()))
         return editor->currentLine() == bookmark->lineNumber();
diff --git a/src/plugins/bookmarks/bookmarkmanager.h b/src/plugins/bookmarks/bookmarkmanager.h
index 3689d59d064..7de5b60d776 100644
--- a/src/plugins/bookmarks/bookmarkmanager.h
+++ b/src/plugins/bookmarks/bookmarkmanager.h
@@ -96,7 +96,7 @@ public:
     void moveDown();
     void edit();
     void editByFileAndLine(const Utils::FileName &fileName, int lineNumber);
-    bool gotoBookmark(Bookmark *bookmark);
+    bool gotoBookmark(const Bookmark *bookmark) const;
 
 signals:
     void updateActions(bool enableToggle, int state);
diff --git a/src/plugins/cmakeprojectmanager/cmaketoolmanager.cpp b/src/plugins/cmakeprojectmanager/cmaketoolmanager.cpp
index 6d72b10c303..d7af9c454f8 100644
--- a/src/plugins/cmakeprojectmanager/cmaketoolmanager.cpp
+++ b/src/plugins/cmakeprojectmanager/cmaketoolmanager.cpp
@@ -46,7 +46,7 @@ const char CMAKETOOL_COUNT_KEY[] = "CMakeTools.Count";
 const char CMAKETOOL_DEFAULT_KEY[] = "CMakeTools.Default";
 const char CMAKETOOL_DATA_KEY[] = "CMakeTools.";
 const char CMAKETOOL_FILE_VERSION_KEY[] = "Version";
-const char CMAKETOOL_FILENAME[] = "/qtcreator/cmaketools.xml";
+const char CMAKETOOL_FILENAME[] = "/cmaketools.xml";
 
 class CMakeToolManagerPrivate
 {
@@ -71,8 +71,7 @@ static void addCMakeTool(CMakeTool *item)
 
 static FileName userSettingsFileName()
 {
-    QFileInfo settingsLocation(ICore::settings()->fileName());
-    return FileName::fromString(settingsLocation.absolutePath() + QLatin1String(CMAKETOOL_FILENAME));
+    return FileName::fromString(ICore::userResourcePath() + CMAKETOOL_FILENAME);
 }
 
 static QList<CMakeTool *> readCMakeTools(const FileName &fileName, Core::Id *defaultId, bool fromSDK)
@@ -325,9 +324,8 @@ void CMakeToolManager::restoreCMakeTools()
 {
     Core::Id defaultId;
 
-    QFileInfo systemSettingsFile(ICore::settings(QSettings::SystemScope)->fileName());
-    FileName sdkSettingsFile = FileName::fromString(systemSettingsFile.absolutePath()
-                                                    + QLatin1String(CMAKETOOL_FILENAME));
+    FileName sdkSettingsFile = FileName::fromString(ICore::installerResourcePath()
+                                                    + CMAKETOOL_FILENAME);
 
     QList<CMakeTool *> toolsToRegister = readCMakeTools(sdkSettingsFile, &defaultId, true);
 
diff --git a/src/plugins/coreplugin/dialogs/readonlyfilesdialog.cpp b/src/plugins/coreplugin/dialogs/readonlyfilesdialog.cpp
index 2b7b054a8d0..15039e5d7a5 100644
--- a/src/plugins/coreplugin/dialogs/readonlyfilesdialog.cpp
+++ b/src/plugins/coreplugin/dialogs/readonlyfilesdialog.cpp
@@ -37,6 +37,7 @@
 #include <utils/hostosinfo.h>
 #include <utils/stringutils.h>
 
+#include <QButtonGroup>
 #include <QDir>
 #include <QFileInfo>
 #include <QMap>
diff --git a/src/plugins/coreplugin/find/findtoolbar.cpp b/src/plugins/coreplugin/find/findtoolbar.cpp
index 0caaeef0305..5ca9833343b 100644
--- a/src/plugins/coreplugin/find/findtoolbar.cpp
+++ b/src/plugins/coreplugin/find/findtoolbar.cpp
@@ -45,6 +45,7 @@
 #include <QDebug>
 #include <QSettings>
 
+#include <QAbstractItemView>
 #include <QCheckBox>
 #include <QClipboard>
 #include <QCompleter>
diff --git a/src/plugins/coreplugin/icore.cpp b/src/plugins/coreplugin/icore.cpp
index 99f2a2f7da0..1f9d400985c 100644
--- a/src/plugins/coreplugin/icore.cpp
+++ b/src/plugins/coreplugin/icore.cpp
@@ -410,7 +410,7 @@ QString ICore::userResourcePath()
 {
     // Create qtcreator dir if it doesn't yet exist
     const QString configDir = QFileInfo(settings(QSettings::UserScope)->fileName()).path();
-    const QString urp = configDir + QLatin1String("/qtcreator");
+    const QString urp = configDir + '/' + QLatin1String(Constants::IDE_ID);
 
     if (!QFileInfo::exists(urp + QLatin1Char('/'))) {
         QDir dir;
@@ -421,6 +421,12 @@ QString ICore::userResourcePath()
     return urp;
 }
 
+QString ICore::installerResourcePath()
+{
+    return QFileInfo(settings(QSettings::SystemScope)->fileName()).path() + '/'
+           + Constants::IDE_ID;
+}
+
 QString ICore::documentationPath()
 {
     return QDir::cleanPath(QCoreApplication::applicationDirPath() + '/' + RELATIVE_DOC_PATH);
@@ -486,7 +492,7 @@ QWidget *ICore::currentContextWidget()
 }
 
 
-QWidget *ICore::mainWindow()
+QMainWindow *ICore::mainWindow()
 {
     return m_mainwindow;
 }
diff --git a/src/plugins/coreplugin/icore.h b/src/plugins/coreplugin/icore.h
index 6f7991466dc..925b84d0103 100644
--- a/src/plugins/coreplugin/icore.h
+++ b/src/plugins/coreplugin/icore.h
@@ -28,6 +28,7 @@
 #include "core_global.h"
 #include "id.h"
 
+#include <QMainWindow>
 #include <QObject>
 #include <QRect>
 #include <QSettings>
@@ -93,13 +94,14 @@ public:
 
     static QString resourcePath();
     static QString userResourcePath();
+    static QString installerResourcePath();
     static QString documentationPath();
     static QString libexecPath();
 
     static QString versionString();
     static QString buildCompatibilityString();
 
-    static QWidget *mainWindow();
+    static QMainWindow *mainWindow();
     static QWidget *dialogParent();
     static QStatusBar *statusBar();
     /* Raises and activates the window for the widget. This contains workarounds for X11. */
diff --git a/src/plugins/debugger/debuggeritemmanager.cpp b/src/plugins/debugger/debuggeritemmanager.cpp
index bc3f0010e89..9f543f01ab7 100644
--- a/src/plugins/debugger/debuggeritemmanager.cpp
+++ b/src/plugins/debugger/debuggeritemmanager.cpp
@@ -71,9 +71,9 @@ namespace Internal {
 
 const char DEBUGGER_COUNT_KEY[] = "DebuggerItem.Count";
 const char DEBUGGER_DATA_KEY[] = "DebuggerItem.";
-const char DEBUGGER_LEGACY_FILENAME[] = "/qtcreator/profiles.xml";
+const char DEBUGGER_LEGACY_FILENAME[] = "/profiles.xml";
 const char DEBUGGER_FILE_VERSION_KEY[] = "Version";
-const char DEBUGGER_FILENAME[] = "/qtcreator/debuggers.xml";
+const char DEBUGGER_FILENAME[] = "/debuggers.xml";
 const char debuggingToolsWikiLinkC[] = "http://wiki.qt.io/Qt_Creator_Windows_Debugging";
 
 class DebuggerItemModel;
@@ -821,8 +821,7 @@ void DebuggerItemManagerPrivate::readLegacyDebuggers(const FileName &file)
 
 static FileName userSettingsFileName()
 {
-    QFileInfo settingsLocation(ICore::settings()->fileName());
-    return FileName::fromString(settingsLocation.absolutePath() + QLatin1String(DEBUGGER_FILENAME));
+    return FileName::fromString(ICore::userResourcePath() + DEBUGGER_FILENAME);
 }
 
 DebuggerItemManagerPrivate::DebuggerItemManagerPrivate()
@@ -918,8 +917,7 @@ void DebuggerItemManagerPrivate::readDebuggers(const FileName &fileName, bool is
 void DebuggerItemManagerPrivate::restoreDebuggers()
 {
     // Read debuggers from SDK
-    QFileInfo systemSettingsFile(ICore::settings(QSettings::SystemScope)->fileName());
-    readDebuggers(FileName::fromString(systemSettingsFile.absolutePath() + DEBUGGER_FILENAME), true);
+    readDebuggers(FileName::fromString(ICore::installerResourcePath() + DEBUGGER_FILENAME), true);
 
     // Read all debuggers from user file.
     readDebuggers(userSettingsFileName(), false);
@@ -929,10 +927,8 @@ void DebuggerItemManagerPrivate::restoreDebuggers()
     autoDetectGdbOrLldbDebuggers();
 
     // Add debuggers from pre-3.x profiles.xml
-    QFileInfo systemLocation(ICore::settings(QSettings::SystemScope)->fileName());
-    readLegacyDebuggers(FileName::fromString(systemLocation.absolutePath() + QLatin1String(DEBUGGER_LEGACY_FILENAME)));
-    QFileInfo userLocation(ICore::settings()->fileName());
-    readLegacyDebuggers(FileName::fromString(userLocation.absolutePath() + QLatin1String(DEBUGGER_LEGACY_FILENAME)));
+    readLegacyDebuggers(FileName::fromString(ICore::installerResourcePath() + DEBUGGER_LEGACY_FILENAME));
+    readLegacyDebuggers(FileName::fromString(ICore::userResourcePath() + DEBUGGER_LEGACY_FILENAME));
 }
 
 void DebuggerItemManagerPrivate::saveDebuggers()
diff --git a/src/plugins/help/help.qbs b/src/plugins/help/help.qbs
index c4f0754561b..56f5c4fbd02 100644
--- a/src/plugins/help/help.qbs
+++ b/src/plugins/help/help.qbs
@@ -5,6 +5,7 @@ QtcPlugin {
 
     Depends { name: "Qt"; submodules: ["help", "network", "sql"]; }
     Depends { name: "Qt.printsupport" }
+    Depends { name: "Qt.webenginewidgets"; required: false }
 
     Depends { name: "Aggregation" }
     Depends { name: "Utils" }
@@ -16,6 +17,8 @@ QtcPlugin {
 
     cpp.defines: {
         var defines = base.concat(["QT_CLUCENE_SUPPORT"]);
+        if (Qt.webenginewidgets.present)
+            defines.push("QTC_WEBENGINE_HELPVIEWER");
         return defines;
     }
 
@@ -50,6 +53,14 @@ QtcPlugin {
         ]
     }
 
+    Group {
+        name: "WebEngine Sources"
+        condition: Qt.webenginewidgets.present
+        files: [
+            "webenginehelpviewer.cpp", "webenginehelpviewer.h"
+        ]
+    }
+
     Group {
         id: sharedSources
         name: "Shared Sources"
diff --git a/src/plugins/macros/macrooptionswidget.cpp b/src/plugins/macros/macrooptionswidget.cpp
index a55849d50bc..b49d6eeab09 100644
--- a/src/plugins/macros/macrooptionswidget.cpp
+++ b/src/plugins/macros/macrooptionswidget.cpp
@@ -35,6 +35,7 @@
 #include <coreplugin/actionmanager/command.h>
 #include <coreplugin/id.h>
 
+#include <QAction>
 #include <QDir>
 #include <QFileInfo>
 #include <QTreeWidget>
diff --git a/src/plugins/projectexplorer/devicesupport/desktopdeviceconfigurationwidget.cpp b/src/plugins/projectexplorer/devicesupport/desktopdeviceconfigurationwidget.cpp
index c791e8ac80d..fdac2ab2301 100644
--- a/src/plugins/projectexplorer/devicesupport/desktopdeviceconfigurationwidget.cpp
+++ b/src/plugins/projectexplorer/devicesupport/desktopdeviceconfigurationwidget.cpp
@@ -31,6 +31,8 @@
 #include <utils/portlist.h>
 #include <utils/qtcassert.h>
 
+#include <QRegExpValidator>
+
 using namespace ProjectExplorer::Constants;
 
 namespace ProjectExplorer {
diff --git a/src/plugins/projectexplorer/devicesupport/devicemanager.cpp b/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
index 900f6d283ac..1b87f03b99a 100644
--- a/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
+++ b/src/plugins/projectexplorer/devicesupport/devicemanager.cpp
@@ -150,7 +150,7 @@ void DeviceManager::load()
     // read devices file from global settings path
     QHash<Core::Id, Core::Id> defaultDevices;
     QList<IDevice::Ptr> sdkDevices;
-    if (reader.load(systemSettingsFilePath(QLatin1String("/qtcreator/devices.xml"))))
+    if (reader.load(systemSettingsFilePath(QLatin1String("/devices.xml"))))
         sdkDevices = fromMap(reader.restoreValues().value(DeviceManagerKey).toMap(), &defaultDevices);
     // read devices file from user settings path
     QList<IDevice::Ptr> userDevices;
@@ -230,9 +230,8 @@ Utils::FileName DeviceManager::settingsFilePath(const QString &extension)
 
 Utils::FileName DeviceManager::systemSettingsFilePath(const QString &deviceFileRelativePath)
 {
-    return Utils::FileName::fromString(
-              QFileInfo(Core::ICore::settings(QSettings::SystemScope)->fileName()).absolutePath()
-              + deviceFileRelativePath);
+    return Utils::FileName::fromString(Core::ICore::installerResourcePath()
+                                       + deviceFileRelativePath);
 }
 
 void DeviceManager::addDevice(const IDevice::ConstPtr &_device)
diff --git a/src/plugins/projectexplorer/kitmanager.cpp b/src/plugins/projectexplorer/kitmanager.cpp
index 91b2529e8dc..ade2064935e 100644
--- a/src/plugins/projectexplorer/kitmanager.cpp
+++ b/src/plugins/projectexplorer/kitmanager.cpp
@@ -53,12 +53,11 @@ const char KIT_DATA_KEY[] = "Profile.";
 const char KIT_COUNT_KEY[] = "Profile.Count";
 const char KIT_FILE_VERSION_KEY[] = "Version";
 const char KIT_DEFAULT_KEY[] = "Profile.Default";
-const char KIT_FILENAME[] = "/qtcreator/profiles.xml";
+const char KIT_FILENAME[] = "/profiles.xml";
 
 static FileName settingsFileName()
 {
-    QFileInfo settingsLocation(ICore::settings()->fileName());
-    return FileName::fromString(settingsLocation.absolutePath() + QLatin1String(KIT_FILENAME));
+    return FileName::fromString(ICore::resourcePath() + KIT_FILENAME);
 }
 
 // --------------------------------------------------------------------------
@@ -131,8 +130,7 @@ void KitManager::restoreKits()
     QList<Kit *> sdkKits;
 
     // read all kits from SDK
-    QFileInfo systemSettingsFile(ICore::settings(QSettings::SystemScope)->fileName());
-    QFileInfo kitFile(systemSettingsFile.absolutePath() + QLatin1String(KIT_FILENAME));
+    QFileInfo kitFile(ICore::installerResourcePath() + KIT_FILENAME);
     if (kitFile.exists()) {
         KitList system = restoreKits(FileName(kitFile));
         // make sure we mark these as autodetected and run additional setup logic
diff --git a/src/plugins/projectexplorer/toolchainmanager.cpp b/src/plugins/projectexplorer/toolchainmanager.cpp
index 87ad2f2b30d..c2681826c15 100644
--- a/src/plugins/projectexplorer/toolchainmanager.cpp
+++ b/src/plugins/projectexplorer/toolchainmanager.cpp
@@ -44,14 +44,13 @@
 static const char TOOLCHAIN_DATA_KEY[] = "ToolChain.";
 static const char TOOLCHAIN_COUNT_KEY[] = "ToolChain.Count";
 static const char TOOLCHAIN_FILE_VERSION_KEY[] = "Version";
-static const char TOOLCHAIN_FILENAME[] = "/qtcreator/toolchains.xml";
+static const char TOOLCHAIN_FILENAME[] = "/toolchains.xml";
 
 using namespace Utils;
 
 static FileName settingsFileName(const QString &path)
 {
-    QFileInfo settingsLocation(Core::ICore::settings()->fileName());
-    return FileName::fromString(settingsLocation.absolutePath() + path);
+    return FileName::fromString(Core::ICore::resourcePath() + path);
 }
 
 namespace ProjectExplorer {
@@ -304,9 +303,8 @@ void ToolChainManager::restoreToolChains()
 
 QList<ToolChain *> ToolChainManager::readSystemFileToolChains()
 {
-    QFileInfo systemSettingsFile(Core::ICore::settings(QSettings::SystemScope)->fileName());
-    QList<ToolChain *> systemTcs
-            = restoreFromFile(FileName::fromString(systemSettingsFile.absolutePath() + QLatin1String(TOOLCHAIN_FILENAME)));
+    QList<ToolChain *> systemTcs = restoreFromFile(
+        FileName::fromString(Core::ICore::installerResourcePath() + TOOLCHAIN_FILENAME));
 
     foreach (ToolChain *tc, systemTcs)
         tc->setDetection(ToolChain::AutoDetection);
diff --git a/src/plugins/projectexplorer/userfileaccessor.cpp b/src/plugins/projectexplorer/userfileaccessor.cpp
index fb7a8c7e51a..b86392a273e 100644
--- a/src/plugins/projectexplorer/userfileaccessor.cpp
+++ b/src/plugins/projectexplorer/userfileaccessor.cpp
@@ -1571,8 +1571,7 @@ static QString maddeRoot(const QString &qmakePath)
 void UserFileVersion11Upgrader::parseQtversionFile()
 {
     PersistentSettingsReader reader;
-    QFileInfo settingsLocation = QFileInfo(Core::ICore::settings()->fileName());
-    reader.load(FileName::fromString(settingsLocation.absolutePath() + "/qtversion.xml"));
+    reader.load(FileName::fromString(Core::ICore::userResourcePath() + "/../qtversion.xml"));
     QVariantMap data = reader.restoreValues();
 
     int count = data.value("QtVersion.Count", 0).toInt();
@@ -1610,8 +1609,7 @@ void UserFileVersion11Upgrader::parseQtversionFile()
 void UserFileVersion11Upgrader::parseToolChainFile()
 {
     PersistentSettingsReader reader;
-    QFileInfo settingsLocation(Core::ICore::settings()->fileName());
-    reader.load(FileName::fromString(settingsLocation.absolutePath() + "/toolChains.xml"));
+    reader.load(FileName::fromString(Core::ICore::userResourcePath() + "/../toolChains.xml"));
     QVariantMap data = reader.restoreValues();
     int count = data.value("ToolChain.Count", 0).toInt();
     for (int i = 0; i < count; ++i) {
diff --git a/src/plugins/qmldesigner/components/integration/designdocument.cpp b/src/plugins/qmldesigner/components/integration/designdocument.cpp
index 0e78864c140..2235e984a1d 100644
--- a/src/plugins/qmldesigner/components/integration/designdocument.cpp
+++ b/src/plugins/qmldesigner/components/integration/designdocument.cpp
@@ -382,60 +382,11 @@ void DesignDocument::deleteSelected()
 
 void DesignDocument::copySelected()
 {
-    QScopedPointer<Model> copyModel(Model::create("QtQuick.Rectangle", 1, 0, currentModel()));
-    copyModel->setFileUrl(currentModel()->fileUrl());
-    copyModel->changeImports(currentModel()->imports(), {});
-
-    Q_ASSERT(copyModel);
-
     DesignDocumentView view;
 
     currentModel()->attachView(&view);
 
-    if (view.selectedModelNodes().isEmpty())
-        return;
-
-    QList<ModelNode> selectedNodes(view.selectedModelNodes());
-
-    foreach (const ModelNode &node, selectedNodes) {
-        foreach (const ModelNode &node2, selectedNodes) {
-            if (node.isAncestorOf(node2))
-                selectedNodes.removeAll(node2);
-        }
-    }
-
-    if (selectedNodes.count() == 1) {
-        ModelNode selectedNode(selectedNodes.first());
-
-        if (!selectedNode.isValid())
-            return;
-
-        currentModel()->detachView(&view);
-
-        copyModel->attachView(&view);
-        view.replaceModel(selectedNode);
-
-        Q_ASSERT(view.rootModelNode().isValid());
-        Q_ASSERT(view.rootModelNode().type() != "empty");
-
-        view.toClipboard();
-    } else { //multi items selected
-        currentModel()->detachView(&view);
-        copyModel->attachView(&view);
-
-        foreach (ModelNode node, view.rootModelNode().directSubModelNodes()) {
-            node.destroy();
-        }
-        view.changeRootNodeType("QtQuick.Rectangle", 1, 0);
-        view.rootModelNode().setIdWithRefactoring(QLatin1String("designer__Selection"));
-
-        foreach (const ModelNode &selectedNode, selectedNodes) {
-            ModelNode newNode(view.insertModel(selectedNode));
-            view.rootModelNode().nodeListProperty("data").reparentHere(newNode);
-        }
-
-        view.toClipboard();
-    }
+    DesignDocumentView::copyModelNodes(view.selectedModelNodes());
 }
 
 void DesignDocument::cutSelected()
@@ -479,28 +430,21 @@ static void scatterItem(const ModelNode &pastedNode, const ModelNode &targetNode
 
 void DesignDocument::paste()
 {
-    QScopedPointer<Model> pasteModel(Model::create("empty", 1, 0, currentModel()));
-    pasteModel->setFileUrl(currentModel()->fileUrl());
-    pasteModel->changeImports(currentModel()->imports(), {});
-
-    Q_ASSERT(pasteModel);
+    QScopedPointer<Model> pasteModel(DesignDocumentView::pasteToModel());
 
     if (!pasteModel)
         return;
 
     DesignDocumentView view;
     pasteModel->attachView(&view);
-
-    view.fromClipboard();
-
     ModelNode rootNode(view.rootModelNode());
+    QList<ModelNode> selectedNodes = rootNode.directSubModelNodes();
+    pasteModel->detachView(&view);
 
     if (rootNode.type() == "empty")
         return;
 
-    if (rootNode.id() == QLatin1String("designer__Selection")) {
-        QList<ModelNode> selectedNodes = rootNode.directSubModelNodes();
-        pasteModel->detachView(&view);
+    if (rootNode.id() == "designer__Selection") {
         currentModel()->attachView(&view);
 
         ModelNode targetNode;
@@ -546,7 +490,6 @@ void DesignDocument::paste()
         try {
             RewriterTransaction transaction(rewriterView(), QByteArrayLiteral("DesignDocument::paste2"));
 
-            pasteModel->detachView(&view);
             currentModel()->attachView(&view);
             ModelNode pastedNode(view.insertModel(rootNode));
             ModelNode targetNode;
diff --git a/src/plugins/qmldesigner/components/integration/designdocumentview.cpp b/src/plugins/qmldesigner/components/integration/designdocumentview.cpp
index a69cd2dcdd6..b371fe3fe6e 100644
--- a/src/plugins/qmldesigner/components/integration/designdocumentview.cpp
+++ b/src/plugins/qmldesigner/components/integration/designdocumentview.cpp
@@ -26,6 +26,11 @@
 #include "designdocumentview.h"
 #include <rewriterview.h>
 #include <basetexteditmodifier.h>
+#include <modelmerger.h>
+
+#include "designdocument.h"
+#include <qmldesignerplugin.h>
+#include <nodelistproperty.h>
 
 #include <QApplication>
 #include <QPlainTextEdit>
@@ -33,10 +38,12 @@
 #include <QMimeData>
 #include <QDebug>
 
+#include <utils/qtcassert.h>
+
 namespace QmlDesigner {
 
 DesignDocumentView::DesignDocumentView(QObject *parent)
-    : AbstractView(parent), m_modelMerger(this)
+    : AbstractView(parent), m_modelMerger(new ModelMerger(this))
 {
 }
 
@@ -44,6 +51,16 @@ DesignDocumentView::~DesignDocumentView()
 {
 }
 
+ModelNode DesignDocumentView::insertModel(const ModelNode &modelNode)
+{
+    return m_modelMerger->insertModel(modelNode);
+}
+
+void DesignDocumentView::replaceModel(const ModelNode &modelNode)
+{
+    m_modelMerger->replaceModel(modelNode);
+}
+
 static QStringList arrayToStringList(const QByteArray &byteArray)
 {
     QString str(QString::fromUtf8(byteArray));
@@ -140,4 +157,95 @@ void DesignDocumentView::fromText(QString text)
     }
 }
 
+static Model *currentModel()
+{
+    DesignDocument *document = QmlDesignerPlugin::instance()->viewManager().currentDesignDocument();
+    if (document)
+        return document->currentModel();
+
+    return 0;
+}
+
+Model *DesignDocumentView::pasteToModel()
+{
+    Model *parentModel = currentModel();
+
+    QTC_ASSERT(parentModel, return 0);
+
+    Model *pasteModel(Model::create("empty", 1, 0, parentModel));
+
+    pasteModel->setFileUrl(parentModel->fileUrl());
+    pasteModel->changeImports(parentModel->imports(), {});
+
+    Q_ASSERT(pasteModel);
+
+    if (!pasteModel)
+        return 0;
+
+    DesignDocumentView view;
+    pasteModel->attachView(&view);
+
+    view.fromClipboard();
+
+    return pasteModel;
+}
+
+void DesignDocumentView::copyModelNodes(const QList<ModelNode> &nodesToCopy)
+{
+    Model *parentModel = currentModel();
+
+    QTC_ASSERT(parentModel, return);
+
+    QScopedPointer<Model> copyModel(Model::create("QtQuick.Rectangle", 1, 0, parentModel));
+
+    copyModel->setFileUrl(parentModel->fileUrl());
+    copyModel->changeImports(parentModel->imports(), {});
+
+    Q_ASSERT(copyModel);
+
+    QList<ModelNode> selectedNodes = nodesToCopy;
+
+    if (selectedNodes.isEmpty())
+        return;
+
+    foreach (const ModelNode &node, selectedNodes) {
+        foreach (const ModelNode &node2, selectedNodes) {
+            if (node.isAncestorOf(node2))
+                selectedNodes.removeAll(node2);
+        }
+    }
+
+    DesignDocumentView view;
+    copyModel->attachView(&view);
+
+    if (selectedNodes.count() == 1) {
+        ModelNode selectedNode(selectedNodes.first());
+
+        if (!selectedNode.isValid())
+            return;
+
+        view.replaceModel(selectedNode);
+
+        Q_ASSERT(view.rootModelNode().isValid());
+        Q_ASSERT(view.rootModelNode().type() != "empty");
+
+        view.toClipboard();
+    } else { //multi items selected
+
+        foreach (ModelNode node, view.rootModelNode().directSubModelNodes()) {
+            node.destroy();
+        }
+        view.changeRootNodeType("QtQuick.Rectangle", 2, 0);
+        view.rootModelNode().setIdWithRefactoring("designer__Selection");
+
+        foreach (const ModelNode &selectedNode, selectedNodes) {
+            ModelNode newNode(view.insertModel(selectedNode));
+            view.rootModelNode().nodeListProperty("data").reparentHere(newNode);
+        }
+
+        view.toClipboard();
+    }
+
+}
+
 }// namespace QmlDesigner
diff --git a/src/plugins/qmldesigner/components/integration/designdocumentview.h b/src/plugins/qmldesigner/components/integration/designdocumentview.h
index d3fc45c38da..6abc92df09b 100644
--- a/src/plugins/qmldesigner/components/integration/designdocumentview.h
+++ b/src/plugins/qmldesigner/components/integration/designdocumentview.h
@@ -26,21 +26,22 @@
 #pragma once
 
 #include <abstractview.h>
-#include <modelmerger.h>
+
+#include <memory>
 
 namespace QmlDesigner {
 
-class DesignDocumentView : public AbstractView
+class ModelMerger;
+
+class QMLDESIGNERCORE_EXPORT DesignDocumentView : public AbstractView
 {
         Q_OBJECT
 public:
     DesignDocumentView(QObject *parent = 0);
     ~DesignDocumentView();
 
-    ModelNode insertModel(const ModelNode &modelNode)
-    { return m_modelMerger.insertModel(modelNode); }
-    void replaceModel(const ModelNode &modelNode)
-    { m_modelMerger.replaceModel(modelNode); }
+    ModelNode insertModel(const ModelNode &modelNode);
+    void replaceModel(const ModelNode &modelNode);
 
     void toClipboard() const;
     void fromClipboard();
@@ -48,8 +49,11 @@ public:
     QString toText() const;
     void fromText(QString text);
 
+    static Model *pasteToModel();
+    static void copyModelNodes(const QList<ModelNode> &nodesToCopy);
+
 private:
-    ModelMerger m_modelMerger;
+    std::unique_ptr<ModelMerger> m_modelMerger;
 };
 
 }// namespace QmlDesigner
diff --git a/src/plugins/qmldesigner/designercore/include/qmltimelinekeyframes.h b/src/plugins/qmldesigner/designercore/include/qmltimelinekeyframes.h
index 32d53a5b004..f34e74e5ace 100644
--- a/src/plugins/qmldesigner/designercore/include/qmltimelinekeyframes.h
+++ b/src/plugins/qmldesigner/designercore/include/qmltimelinekeyframes.h
@@ -66,6 +66,7 @@ public:
     const QList<ModelNode> keyframePositions() const;
 
     static bool isValidKeyframe(const ModelNode &node);
+    static bool checkKeyframesType(const ModelNode &node);
     static QmlTimelineFrames keyframesForKeyframe(const ModelNode &node);
 
     void moveAllFrames(qreal offset);
diff --git a/src/plugins/qmldesigner/designercore/include/viewmanager.h b/src/plugins/qmldesigner/designercore/include/viewmanager.h
index f69f714f0a7..b1a8077202e 100644
--- a/src/plugins/qmldesigner/designercore/include/viewmanager.h
+++ b/src/plugins/qmldesigner/designercore/include/viewmanager.h
@@ -96,6 +96,7 @@ public:
     void toggleStatesViewExpanded();
 
     QString qmlJSEditorHelpId() const;
+    DesignDocument *currentDesignDocument() const;
 
 private: // functions
     Q_DISABLE_COPY(ViewManager)
@@ -107,7 +108,6 @@ private: // functions
 
     Model *currentModel() const;
     Model *documentModel() const;
-    DesignDocument *currentDesignDocument() const;
     QString pathToQt() const;
 
     void switchStateEditorViewToBaseState();
diff --git a/src/plugins/qmldesigner/designercore/model/qmltimelinekeyframes.cpp b/src/plugins/qmldesigner/designercore/model/qmltimelinekeyframes.cpp
index 90f6224021b..b4613281e88 100644
--- a/src/plugins/qmldesigner/designercore/model/qmltimelinekeyframes.cpp
+++ b/src/plugins/qmldesigner/designercore/model/qmltimelinekeyframes.cpp
@@ -55,8 +55,7 @@ bool QmlTimelineFrames::isValid() const
 
 bool QmlTimelineFrames::isValidQmlTimelineFrames(const ModelNode &modelNode)
 {
-    return isValidQmlModelNodeFacade(modelNode)
-            && modelNode.metaInfo().isValid()
+    return  modelNode.isValid() && modelNode.metaInfo().isValid()
             && modelNode.metaInfo().isSubclassOf("QtQuick.Timeline.Keyframes");
 }
 
@@ -219,6 +218,11 @@ bool QmlTimelineFrames::isValidKeyframe(const ModelNode &node)
             && node.metaInfo().isSubclassOf("QtQuick.Timeline.Keyframe");
 }
 
+bool QmlTimelineFrames::checkKeyframesType(const ModelNode &node)
+{
+    return node.isValid() && node.type()  == "QtQuick.Timeline.Keyframes";
+}
+
 QmlTimelineFrames QmlTimelineFrames::keyframesForKeyframe(const ModelNode &node)
 {
     if (isValidKeyframe(node) && node.hasParentProperty()) {
diff --git a/src/plugins/qtsupport/qtversionmanager.cpp b/src/plugins/qtsupport/qtversionmanager.cpp
index 621cfa6878d..b7c50fa02ce 100644
--- a/src/plugins/qtsupport/qtversionmanager.cpp
+++ b/src/plugins/qtsupport/qtversionmanager.cpp
@@ -63,7 +63,7 @@ using namespace Internal;
 const char QTVERSION_DATA_KEY[] = "QtVersion.";
 const char QTVERSION_TYPE_KEY[] = "QtVersion.Type";
 const char QTVERSION_FILE_VERSION_KEY[] = "Version";
-const char QTVERSION_FILENAME[] = "/qtcreator/qtversion.xml";
+const char QTVERSION_FILENAME[] = "/qtversion.xml";
 
 static QMap<int, BaseQtVersion *> m_versions;
 static int m_idcount = 0;
@@ -77,16 +77,12 @@ enum { debug = 0 };
 
 static FileName globalSettingsFileName()
 {
-    QSettings *globalSettings = ExtensionSystem::PluginManager::globalSettings();
-    return FileName::fromString(QFileInfo(globalSettings->fileName()).absolutePath()
-                                       + QLatin1String(QTVERSION_FILENAME));
+    return FileName::fromString(Core::ICore::installerResourcePath() + QTVERSION_FILENAME);
 }
 
 static FileName settingsFileName(const QString &path)
 {
-    QSettings *settings = ExtensionSystem::PluginManager::settings();
-    QFileInfo settingsLocation(settings->fileName());
-    return FileName::fromString(settingsLocation.absolutePath() + path);
+    return FileName::fromString(Core::ICore::resourcePath() + path);
 }
 
 
diff --git a/src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp b/src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp
index 83a25c9c388..6ea510db4ac 100644
--- a/src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp
+++ b/src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp
@@ -34,6 +34,7 @@
 #include <QClipboard>
 #include <QIcon>
 #include <QSettings>
+#include <QStyle>
 
 static const char SettingsApplication[] = "QtCreator";
 static const char SettingsKeySkipWarningAbortingBacktrace[]
diff --git a/src/tools/sdktool/settings.cpp b/src/tools/sdktool/settings.cpp
index a809a3b845f..fa57542fbe3 100644
--- a/src/tools/sdktool/settings.cpp
+++ b/src/tools/sdktool/settings.cpp
@@ -51,7 +51,7 @@ Settings::Settings() :
     sdkPath.appendPath(QLatin1String(DATA_PATH));
     sdkPath = Utils::FileName::fromString(QDir::cleanPath(sdkPath.toString()));
     sdkPath.appendPath(QLatin1String(Core::Constants::IDE_SETTINGSVARIANT_STR)
-                       + QLatin1String("/qtcreator"));
+                       + '/' + Core::Constants::IDE_ID);
 }
 
 Utils::FileName Settings::getPath(const QString &file)