fixes #1109

ToInt64() fails on 32bit machines.
window examples under own directory
Merge pull request #1113 from MahApps/punker76-more-demo-beauty

window examples under own directory
Merge pull request #1110 from remcoros/issue-1109

[RFC] fixes #1109
fix using clean window background
Fixed a minor resource issue with highlightbrushsquarebuttons.
Fixed a typo in Controls.TextBox.xaml.