Settings: cleanup resources

Cleanup unused strings & improve current ones

Including:

* replace SUB with SIM
* we don't have App groups in Profiles anymore
* tweaked debugging-related strings
* changed Selector notification to Selector icon - it's located in
  Navigation bar now
* Changed from Wi-Fi to Wi\u2011Fi
* application -> app
* fixed camel case
* moved adb notify below adb over network

Change-Id: If39e21cea60645e7502a3664c88745964d862eb5