Merge pull request #5721 from aristotelos/master

Navigation: Add "contentType" to settings for $.mobile.changePage with "data" argument(cherry picked from commit 8d36366bbd41004648a04fd525152e39b074c7aa)
Popup arrow: Initialize arrow upon _create().
(cherry picked from commit 364212e5fa88757172583718390bebae39d406c5)