Storage location configuration options

Patchset: 11
http://review.cyanogenmod.org/#/c/47623/

Based on d050f80 and 2bb0437 in the former Camera package

PS2: Whitespace cleanup

PS3: Fixed filmstrip preview from camera.

PS4: Check volume availability

PS5: Load the settings when either the camera opens
  or when the gallery opens

PS6: Remove unused import

PS7: Rebase

PS8: Change icon to stat_notify_sdcard, add credit for
  original sources

PS10: Code style cleanup, include icon, and add setting
  to the camcorder settings

PS11: Rebase, reword commit message

Change-Id: Ic484149f1f051aea5c5c8440bbc322e9924683a7