add simple validation example
for validatable controls set SnapsToDevicePixels to true, issue #349
* we don't need to set the Validation.ErrorTemplate to {x:Null}. only change the SnapsToDevicePixels to true to see a better border layout.
+ added example for ComboBox
! fix System.InvalidOperationException at ComboBox Style. remove the Storyboard.TargetName="validationTooltip" at <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsHitTestVisible" Storyboard.TargetName="validationTooltip">
add MetroLabel style
improve flyout style
+ improve/update style for left and right flyouts
+ fix foreground bug (force showing WhiteBrush color)
update flyouts demo
+ add more examples for right and left flyouts
add FlyoutWhiteBrush for dark and light accents
improve some controls for flyout usage
+ change foreground of checkbox, label, radiobutton and textblock to FlyoutWhiteColor / FlyoutWhiteBrush
Fixed Issue #368 => Added Focus to ToggleSwitch & Spacebar key for changing status
Merge pull request #370 from lmseddik/master

Fixed issue #368
Merge branch 'validationerror' of git://github.com/punker76/MahApps.Metro into punker76-validationerror
Merge branch 'punker76-validationerror'
removing dead code
Merge branch 'flyouts' of git://github.com/punker76/MahApps.Metro into punker76-flyouts
Merge branch 'master' of https://github.com/MahApps/MahApps.Metro

Conflicts:
	FlyoutDemo/MainWindow.xaml
	MahApps.Metro/Styles/Controls.CheckBox.xaml
	MahApps.Metro/Styles/Controls.RadioButton.xaml
	MahApps.Metro/Styles/Controls.xaml
	MetroDemo/MainWindow.xaml