Navring changes for consistancy and cleanliness

Change-Id: I45bcde7f6c5ae18d56f54d1444b790902b0448f2
Navbar: handle images selected through the documents api

4.4 added a unified documents api to choose media files. Handle
the returnd data.

Change-Id: I0ecba27ce120ad63abad33aec5364ef00795de3c
SingleChoiceSetting: Add getters and setter

Change-Id: I009ecd490e0aedf698dee44d8b277326be08fd73
Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>
Add option to enable/disable navring (2/2)

This will add an option to toggle navigation ring

If the navigation bar is disabled then a standalone navigation ring is added.

Change-Id: I4d9c2db0ccd801052d1880c3ff29fb2ab2750bc7
Fix string for navring summary

Change-Id: I40f6fbc319cef0131b98fb27ad486e644968d18b
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>