first flyout for settings (not yet finished)
next flyout for shortcuts
prepare ViewModel usage
move MainViewModel to ViewModels directory
view and viewmodel for shortcut
MONI controls styles with Validation.ErrorTemplate = {x:Null}
validation for shortcut view
fix focus issue for shortcut flyout (not yet finished)
use own Mahapps dll with fixed flyouts focus behaviour
Merge remote-tracking branch 'origin/flyouts'

Conflicts:
	MONI/Util/NotifyPropertyChangedHelper.cs