Added Ramen.app.Controller::getApp
Added Ramen.app.Helper::getApp
Forced cls to be an array in Ramen.util.Renderable::addCls and removeCls
Fixed a bug with setting items on the class config in Ramen.view.container.CollectionContainer
Fixed a bug with items not being correctly initialized in Ramen.view.container.Container
Added Ramen.view.layout.Layout::getWrapperEl