Added view:resized event pass-down in evenRegionSize
Added view:resized event pass-down in evenRegionSize

Added cb param to addTab, so that the added tab view can have hooks
setup with the outter tab layout.

bluekvirus/Stage.js,mr-beaver/Stage.js,ragingcat/Stage.js,mr-beaver/Stage.js,mr-beaver/Stage.js,bluekvirus/Stage.js,ragingcat/Stage.js,bluekvirus/Stage.js