Settings - add an AlertDialog before to delete APN to avoid fails

Change-Id: I3361d4160a7e1c4eaee094f08c7d212f71e9e0e7
Fixed minor typo

Also removed unnecessary strings and commit I3361d4160a7e1c4eaee094f08c7d212f71e9e0e7 translated to Russian

Change-Id: I464f271eadc0f5778858a33f6350952b8ea7b7fb
Merge remote-tracking branch 'upstream/jb4.2' into jb4.2