Moved "Application Output" formatting to a specialized formatter.

By introducing the OutputFormatter, RunControls can influence the formatting
depening on the application started. A nice (and intended) side-effect is that
the QML runtime specific formatting will not interfere anymore with anything
else.

src/plugins/qmlprojectmanager/qmlprojectruncontrol.h

@@ -50,6 +50,8 @@ public:
     virtual void stop();
     virtual bool isRunning() const;
 
+    virtual ProjectExplorer::OutputFormatter *createOutputFormatter(QObject *parent = 0);
+
 private slots:
     void processExited(int exitCode);
     void slotBringApplicationToForeground(qint64 pid);