Added ChillyFlashER's Ribbon styles and added demo. .NET 4.5 only.
Redid the closable Tab Items. Close Button should be placed in a /better/ location depending on the Header's fontsize.
Added @pablocrivella changes to the VS Tab Control style.
Implemented a default CloseTabCommand for the Metro*TabControls.
style changes from #493 raised by @stefan-schweiger
Merge pull request #487 from Amrykid/ChillyFlashER-ribbon

[WIP] Metro Ribbon Style by ChillyFlashER
Merge pull request #500 from Amrykid/closable-tab-items-2

Closable Tab Items