Remove the [UIApplication statusBarHidden] use (deprecated since iOS 9).
Use the default UIViewController-based status bar system.
Hide the user interface theme option in Settings.
https://github.com/vector-im/riot-meta/issues/22
The camera preview was set up with a wrong frame value. We wait for the first `viewDidLayoutSubviews` call before setting up the preview.
#686
+ fix the wrong preview layout on iPad described in PR #1372 MediaPicker xib layout fix.