Further tweaks and fixes to the welcome mode.

- Fix typos
- Fix layout on OS X

src/plugins/projectexplorer/projectwelcomepagewidget.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>667</width>
+    <width>639</width>
-    <height>365</height>
+    <height>322</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -46,15 +46,15 @@
            <string/>
           </property>
           <layout class="QGridLayout" name="gridLayout_5">
+           <property name="rightMargin">
+            <number>9</number>
+           </property>
            <property name="horizontalSpacing">
             <number>0</number>
            </property>
            <property name="verticalSpacing">
             <number>3</number>
            </property>
-           <property name="rightMargin">
-            <number>9</number>
-           </property>
            <item row="3" column="0" colspan="3">
             <widget class="Utils::WelcomeModeTreeWidget" name="projTreeWidget">
              <property name="sizePolicy">

src/plugins/qt4projectmanager/gettingstartedwelcomepagewidget.cpp

@@ -72,7 +72,7 @@ GettingStartedWelcomePageWidget::GettingStartedWelcomePageWidget(QWidget *parent
     connect(ui->tutorialTreeWidget, SIGNAL(activated(QString)), SLOT(slotOpenHelpPage(const QString&)));
 
     ui->tutorialTreeWidget->addItem(tr("The Qt Creator User Interface"),
-                                        QString("qthelp://com.nokia.qtcreator.%1%2/doc/index.html").arg(IDE_VERSION_MAJOR).arg(IDE_VERSION_MINOR));
+                                        QLatin1String("qthelp://com.nokia.qtcreator/doc/creator-quick-tour.html"));
     ui->tutorialTreeWidget->addItem(tr("Creating a Qt C++ Application"),
                                         QLatin1String("qthelp://com.nokia.qtcreator/doc/creator-writing-program.html?view=split"));
     ui->tutorialTreeWidget->addItem(tr("Creating a Qt Quick Application"),

src/plugins/welcome/communitywelcomepagewidget.cpp

@@ -66,7 +66,6 @@ CommunityWelcomePageWidget::CommunityWelcomePageWidget(QWidget *parent) :
     supportSites << qMakePair(tr("<b>Qt Centre</b><br /><font color='gray'>Community based Qt support</font>"), QString(QLatin1String("http://www.qtcentre.org")));
 
     sites << qMakePair(tr("<b>Qt Home</b><br /><font color='gray'>Qt by Nokia on the web</font>"), QString(QLatin1String("http://qt.nokia.com")));
-    sites << qMakePair(tr("<b>Qt Labs</b><br /><font color='gray'>Home of the Qt developers</font>"), QString(QLatin1String("http://labs.qt.nokia.com")));
     sites << qMakePair(tr("<b>Qt Git Hosting</b><br /><font color='gray'>Participate in Qt development</font>"), QString(QLatin1String("http://qt.gitorious.org")));
     sites << qMakePair(tr("<b>Qt Apps</b><br /><font color='gray'>Find free Qt-based apps</font>"), QString(QLatin1String("http://www.qt-apps.org")));
 

src/plugins/welcome/communitywelcomepagewidget.ui

@@ -132,7 +132,7 @@
       <item>
        <widget class="Utils::WelcomeModeTreeWidget" name="supportSitesTreeWidget">
         <property name="sizePolicy">
-         <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
+         <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
           <horstretch>0</horstretch>
           <verstretch>0</verstretch>
          </sizepolicy>

src/plugins/welcome/welcomemode.ui

@@ -107,13 +107,13 @@ QToolButton:pressed, QPushButton:pressed{
         <property name="minimumSize">
          <size>
           <width>662</width>
-          <height>490</height>
+          <height>500</height>
          </size>
         </property>
         <property name="maximumSize">
          <size>
           <width>662</width>
-          <height>490</height>
+          <height>500</height>
          </size>
         </property>
         <property name="styleSheet">