hammer.js

touch event on view-overlay
gradient css2 fallbacks
Hammerable mixin. touch instead of click

super in render to hammerify
click on list items

can't "touch" event on scrollable pane, duh!
CompositeView @leave fix

swipe right item.leave()
hammerable fix context
fix / refactor expanding and removing layout list items

TODO
declare topbar broker in init params to split to a seperate concern
leaveList layout_list

cleanup views on fitler
Merge branch 'LayoutsBroker'