Created UI

set window size to maximized
Anchored buttons to correct locations
Added Color selector
Added top popup
Fixed sclalability on small screens, fixed KR
Items for menu, fixed menu size
Merge branch 'UI' into controls

Conflicts:
	motion-paint/MainWindow.xaml
	motion-paint/MainWindow.xaml.cs
removed max size
Merge commit '9689de19985938465590fabffc0141cb2a232e3d' into controls