removed old development configuration fallback settings and fixed an issue where the program would not wait for the load settings process to finish Related to #78
modified the Show method of the INotificationService so that it returns a task to allow code to await for the dialog to be closed Related to #79
fixed an issue with the select items for playback functionality where when doing a drill down, the items selected from the top area would not be cleared when going down to a lower level for selection
fixed an issue with the stop button not working from the bottom bar
fixed an issue with the loading of the main view model at the startup of the application, as this was done before the settings could be loaded
fixed an issue with the PlaybackView where the playlist would randomize while scrolling due to a weird interaction with the items presenter scroll viewer
Merge branch 'master' into fullScreenBehaviour

Conflicts:
	Client/Shell/ShellViewModel.cs