tr()-Fixes for 2.6.

- ProjectExplorer::Profile should appear as 'Target' in the UI.
- Fix messagebox title capitalization
- Fix Q_DECLARE_TR_FUNCTIONS to contain fully qualified class
  names, add where applicable to replace
  QCoreApplication::translate().
- Introduce message utility function for the commonly used
  'No tool chain set up for this profile' message to
  ToolChainProfileInformation.
- Introduce message utility functions related to adding files
  to version control to VcsManager to be shared by QmlJsEditor.
- Fix typos.
- Remove QObject::tr(), QCoreApplication::tr().
- Do not translate diagnostic console warnings of
  QmlProfiler.

Change-Id: I6cee717a504796ef39f6eae58f552c5c8630adf3
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/qmlprofiler/qmlprofilerstatemanager.cpp

@@ -141,8 +141,10 @@ void QmlProfilerStateManager::setCurrentState(QmlProfilerState newState)
         QTC_ASSERT(d->m_currentState == AppDying,
                    qDebug() << "from" << stringForState(d->m_currentState));
         break;
-    default:
-        qDebug() << tr("Switching to unknown state in %1:%2").arg(QString(__FILE__), QString::number(__LINE__));
+    default: {
+        const QString message = QString::fromLatin1("Switching to unknown state in %1:%2").arg(QString::fromLatin1(__FILE__), QString::number(__LINE__));
+        qWarning("%s", qPrintable(message));
+    }
         break;
     }