Processed some of slodge's comments
Merge branch 'v3' of https://github.com/csteeg/MvvmCross into TibetBinding

Conflicts:
	CrossUI/CrossUI.Droid/Dialog/DialogActivity.cs
	CrossUI/CrossUI.Droid/Dialog/DialogListView.cs
	CrossUI/CrossUI.Droid/Dialog/Elements/DateTimeElement.cs
	CrossUI/CrossUI.Touch/Dialog/Elements/Element.cs