tweaking MetroWindow layout to ensure text ellipses are respected
updated demo layout
fix breaking hover effect for min, max, close btn
Merge branch 'origin/master'

Conflicts:
	MahApps.Metro/Themes/MetroWindow.xaml
remove TODO
Merge pull request #598 from MahApps/556-header-text-ellipses

MetroWindow layout now respects TextTrimming