Bug 942281 - Move panel validation into Panel constructor (r=lucasr)
Bug 942281 - Create AuthConfig and add authHandler option to Home.panels.register API (r=lucasr)
Bug 942281 - Rename mLayout -> mPanelLayout in DyanmicPanel (r=lucasr)
Bug 942281 - Add a view for authentication UI to DynamicPanel (r=lucasr)
Bug 942281 - Create a PanelAuthCache to keep track of whether or not panel is authenciated (r=lucasr)