Added control templates for most of the ribbon.
let's add these things back
Fixed 4.5 projects.
Merge pull request #1153 from Tide/ribbon-menu-support

Ribbon menu support
Added code to change the theme and accent on the ribbon demo.
Commented out all templates in styles.xaml for now.
Added more controls to the ribbon demo.
Set the tab scroll buttons to hidden for now.
Added changes from 100GPing100.
Styled Ribbon Button Mouseover, ButtonPress and IsKeyboardFocused.
Styled Ribbon RadioButton MouseOver, Selected, KeyboardFocused, Pressed, SelectedAndMouseOver States
Merge pull request #1 from kiangtengl/ribbon-menu-support

Styled Ribbon Button and RadioButton
Changed resources from static to dynamic for Ribbon/RibbonButton.xaml and Ribbon/RibbonRadioButton.xaml.
Changed border, border brush and border thickness bindings for Ribbon/RibbonButton.xaml and Ribbon/RibbonRadioButton.xaml.
Removed ribbon gradient overlay that QuantumDeveloper pointed out.
Styled Ribbon/RibbonToggleButton.xaml based off of Ribbon/RibbonRadioButton.xaml that kiangtengl styled.
Removed highlight glow on RibbonGroup.xaml.
Changed the brush for the application menu.
Added code to hide the title bar on ribbon load since this is not a ribbon window.
Changed to a clean window for the ribbon demo.
Styled the RibbonMenuButton.xaml and RibbonSplitButton.xaml to match the other buttons.
The Ribbon/RibbonSplitButton.xaml still needs some work.  I don't think it is supposed to have a border when you first mouse over it.  Also, it appears to still have rounded corners.
Sorted out styling of RibbonSplitButton to adopt a metro style. The only edge cases left are the ones where the button is checked
Sorted out styling of RibbonSplitButton to adopt a metro style.
Merge branch 'ribbon-menu-support' of https://github.com/kiangtengl/MahApps.Metro into ribbon-menu-support
Merge pull request #2 from kiangtengl/ribbon-menu-support

Completed Styling of RibbonSplitButton
Added support for Dark Themes in RibbonSplitButton on mouseover.
Now uses DynamicResource WhiteBrush instead of White to set the background.
Merge pull request #3 from kiangtengl/ribbon-menu-support

Added support for Dark Themes in RibbonSplitButton on mouseover.
Fixed application menu border.