Hide splash screen now handled by QGCFileDialog|QGCMessageBox apis
Hide splash screen

Also restructured code to remove duplication
Hide splash screen now handled by QGCFileDialog|QGCMessageBox apis
Hide splash screen

Also restructured code to remove duplication
Merge branch 'SplashScreen' of https://github.com/DonLakeFlyer/qgroundcontrol into SplashScreen

Conflicts:
	src/QGCFileDialog.cc
Merge pull request #1058 from DonLakeFlyer/SplashScreen

Hiding splash screen now handled by QGCFileDialog/QGCMessageBox