Add icons to file system view directory selector

Change-Id: I0b6451d7f68fae93e0b140aaea030c88ec1a8801
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/help/help.qrc

@@ -2,8 +2,6 @@
     <qresource prefix="/help">
         <file>images/find.png</file>
         <file>images/book.png</file>
-        <file>images/home.png</file>
-        <file>images/home@2x.png</file>
         <file>images/category_help.png</file>
         <file>images/mode_help.png</file>
         <file>images/mode_help@2x.png</file>

src/plugins/help/helpwidget.cpp

@@ -176,7 +176,7 @@ HelpWidget::HelpWidget(const Core::Context &context, WidgetStyle style, QWidget
         layout->addWidget(Core::Command::toolButtonWithAppendedShortcut(m_switchToHelp, cmd));
     }
 
-    m_homeAction = new QAction(Icons::HOME_TOOLBAR.icon(), tr("Home"), this);
+    m_homeAction = new QAction(Utils::Icons::HOME_TOOLBAR.icon(), tr("Home"), this);
     cmd = Core::ActionManager::registerAction(m_homeAction, Constants::HELP_HOME, context);
     connect(m_homeAction, &QAction::triggered, this, &HelpWidget::goHome);
     layout->addWidget(Core::Command::toolButtonWithAppendedShortcut(m_homeAction, cmd));