Settings: create cm string for wallpapers

Change-Id: I21af266bb0aeff7598082d998b2c2e8d6bbbe187
Automatic translation import

Change-Id: I41eb51802e180cb3962d6bed1940aeed2bbf0989
Missing back button on MultiSimSettings ActionBar

Fixed missing back button on ActionBar (default Settings behavior on
submenus) by adding "parentActivityName" property to MultiSimSettings
activity.

Change-Id: I60a1123be29d81c8232e0acee1ac9544bf9b32e6