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
woah now, I don't think this is ready
and i missed the demos. my bad.
Modifications in the foreground, and add a new trigger in the closetab adding the foreground
Fixed DataGridCell selection behavior

Before you had to click exactly an the TextBlock to select the row, now
you can click on the whole row.

Thanks @stefan-schweiger
Allow more items to be displayed in the ComboBox autocompletion demo
Removed unecessary property
Fixed a bug where closing a tab would result in a NullReferenceException. Added a property when a MetroTabItem is created by a Metro*TabControl.
Merge pull request #517 from Amrykid/metro-tabitem-patch1

MetroTabItem Patch #1
Merge pull request #1 from MahApps/master

Rebase