FlipView breaks Designer again...
Merge pull request #1104 from MahApps/1094-punker76-textblock-foreground

FlipView breaks Designer again...
split examples into user controls
fix ArgumentException for EnableVirtualizationWithGrouping
another FlipView designer issue
Visual Studio Designer, I hate you!
FlipView fixed, can now be loaded in design time
Merge pull request #1106 from MahApps/punker76-split-main-window-examples

split examples into user controls
don't forget to re-activate
Merge pull request #1108 from MahApps/1105-punker76-progressring-activation

from #1105 : don't forget to re-activate progressring