Backed out changeset 4ce831d82c1f (bug 898647) for gaia-ui bustage on an already CLOSED TREE

--HG--
rename : browser/modules/WebappManager.jsm => browser/modules/webappsUI.jsm
rename : toolkit/webapps/NativeApp.jsm => toolkit/webapps/WebappsInstaller.jsm
rename : webapprt/WebappManager.jsm => webapprt/WebappsHandler.jsm