Make sure v8 service sends a finished signal

Otherwise Qt Creator will block forever ...

Change-Id: I2ffe5e826c10338aeb4ded7079154fe83710c108
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Fix flaky QQmlProfilerService::scenegraphData test

QSGRenderThread::syncAndRender first triggers the frameSwapped() signal,
and only then adds the SceneGraphRenderLoopFrame message. We're waiting
for the frameSwapped signal to stop profiling, and therefore can't be sure
whether we'll get the final SceneGraphRenderLoopFrame message or not.

Task-number: QTBUG-33024
Change-Id: I3216667e8e5cdc79f210290ce22cc6b08c579b6a
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Fix crash in FolderListModel

Change-Id: I8d012e9a356676dd3dad246579c7339eaddc1e91
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>