Added ContextMenu for delete and scrollviewer

Added a ContextMenu to delete items from the ConnectionsPage.
Added ScrollViewer on the AddConnectionPage, the items where getting off
the screen, now we can read the advertise on the bottom.
Merge branch 'master' of https://github.com/BrianLima/XBMCRemoteWP

Conflicts:
	XBMCRemoteWP/ConnectionsPage.xaml.cs
	XBMCRemoteWP/Pages/AddConnectionPage.xaml