implement the scroll repeat
fix reset _roElement when we change the keyboard
implement the feature "register IHighlightableElement in a children list of another IHighlightableElement"

the IHighlightableElement must implement IExtensibleHighlightableElement
added comments
adding using tests, implemented ExtensibleHighlightableElementProxy
switch SimpleSkin with MultiSkin
Implemented the Docking with the Scroller

Rename MultiSkin in KeyboardDisplayed
*

MultiSkin becomes KeyboardDisplayer
SimpleSkin becomes MainKeyboardManager
Quick Fix
Quick Fix
Adapted the KeyboardDisplayer
fix WordPrediction start for this branch
fix HighlighterService start in KeyboardDIsplayer
the most comfortable Unbind
the binding preview no longer appears in taskbar
avoids binding during a resize
fix the ServiceNotAvailableException when we stop the prediction during the construction engine
fix the Exception "Loading Error" with Sybille.WordPredictor
prediction keyboard take the current keyboard HighlightBackground
fix StackOverflow with scroller ( 1 elementRoot with 0 children )