systemui: Add CONNECTIVITY_INTERNAL permission

 * SystemUI needs to be able to list interfaces if tethering is in use
   and we ask for a second tethering path to be set up (BT+USB, etc).
 * Add permission to stop exceptions in the framework and enable
   tethering thru multiple paths.

Change-Id: If7a65c31557dc2f0451f0612fb109f61e8056368
Signed-off-by: Dan Trifan <jimsth@gmail.com>
Better HALO strings

Change-Id: I8e1c97d9ab8df29947e672a214ca006f1f26ba1e
Signed-off-by: Dan Trifan <jimsth@gmail.com>