Makes the add button for new APNs appear in the action bar.

The APN add button (a plus sign) now appears in the action bar if possible. The APN list interface is now more consistent with the WiFi list interface. Previously the user had to press the 'Menu' hardware button or the three dot button on the screen in order to reveal the actions.

Change-Id: Iae622054ec080ba4775c22223dd75a865c83fc27
Signed-off-by: Manuel R. Ciosici <manuelrciosici@gmail.com>
Apn Settings : Fix panel title

Show appropriate apn editor title

Change-Id: I1f9dbce5dbf464db79d7c2fbedb8f833e4b46468
Settings - add an AlertDialog before to delete APN to avoid fails

patch 1: fix blank space
patch 2: remove FR translation and change NegativeButton string
patch 3: improve the NegativeButton (thank you, David)
patch 4: remove create()

Change-Id: I3361d4160a7e1c4eaee094f08c7d212f71e9e0e7