[1/3] Settings: Increasing Ringtone

      Option to set the incoming call ringtone volume to increase
      in pre-defined (user selected) increments.

Linked commits:
      Frameworks - https://gerrit.paranoidandroid.co/#/c/448/
      Telephony  - https://gerrit.paranoidandroid.co/#/c/451/

Change-Id: If7b36bd098dc65c8d418d372d4e0017868826a1f
[1/2] Setting: Lockscreen maximized widgets

      Enable lockscreen widgets to be expanded by default.

      PA modifications to commit:
          Allow for long press unlock.
          Enable checkbox only if "Enable Widgets" is selected
          Remove preference is device is a tablet (already expanded)

PS2: Actually remove preference from tablets
PS3: Show option in all security categories
     (credit Cristiano Matos)
PS4: Rebase

Change-Id: I3d52b752415f48e5468db0804be5c2ff93a71e31
Settings: Advanced low battery indicator options (2/2)

Based on a Slim Roms implementation with a special thanks to @kufikugel
This commit introduces following new modes to indicate low battery.
Accessible through action bar and following PA way of features implementation (clean, simple, functional and beautiful)
     * 0 = show dialog + play sound (default)
     * 1 = fire notification + play sound
     * 2 = show dialog only
     * 3 = fire notification only
     * 4 = play sound only
     * 5 = none

PS2 - Swap battery and warning icons on action bar
PS3 - Update commit message

Change-Id: I2d5358962c3bbf7b60c8af19aad9db3a4a8071de
Settings: Replace low battery warning icon with Google warning icon

PS1: replace string in PowerUsageSummary to point to new icon
and replace drawables with Google drawables

Change-Id: Ie123feabb7a74feb61f4cd732ae9b1326099a1e7