Camera2: Improve qcom strings

* Set more strings untranslatable
* Rephrase some dialogs
* Use consistent string style with the rest of the system
* Change some unnecessary uppercase strings

Change-Id: I6b5fcd0c79214138751fcb486ebc0a3a90383bab
camera: Bring back ignorePreferredPreviewSizeForVideo

 * Still needed on some old but capable devices that report
   a tiny preferred preview size

Change-Id: Ib78e0683cbf29644fc6f21200b55ee2efa90bbae
Merge "Camera2: Improve qcom strings" into cm-11.0
Merge remote-tracking branch 'github/cm-11.0' into cm11mod