add wrappernode
create new scroller
add the walker
merge all strategies to the new scrolling
update ZOndeDividerStrategy and add fixes
Merge branch 'f-roadmap-2013' into f-scroller

Conflicts:
	Plugins/Accessibility/KeyScroller/ScrollingStrategies/ZoneSplittingScrollingStrategy.cs
	Plugins/Accessibility/SimpleSkin/ViewModels/VMZoneSimple.cs
last fixes + switch "KeyScroller" to "Scroller" namespace
add missing features + fixes
Merge remote-tracking branch 'origin/f-roadmap-2013' into f-scroller
fix stack overflow when the predictor is alone and empty
fix strategy when registered elements contains no children or skipped children
Merge remote-tracking branch 'origin/f-roadmap-2013' into f-scroller
good bye Johnnie
little update
Merge branch 'f-scroller' into f-roadmap-2013
clean writeline on scroller