Storage Settings: Allow user to trigger a volume rescan

This change allows to trigger a rescan of a volume with the next restrictions:
- Internal volumes if they are emulates
- Primary volumes
- Non-Removable volumes

Ported from: http://review.cyanogenmod.org/44586

Change-Id: I7e75a324938d8081fd715f702d50f1fdceabd96d
Settings: IT translations

	Small fix

Change-Id: I62821630aec9477efa13a58bc09ec144f25e29de
Settings: LT translations

Additional strings have been translated

Change-Id: I1ac04657464710ee07e197e98199335186a2cf93
Settings: IT translations

Change-Id: Ic52716fdd563d98164a1148814b349d95faafd49
Make the lock screen camera widget configurable (2/2)

Change-Id: I704ddeb4a1b8ba4537d961334138b6661f8dbc31
Settings: fix led pulsespeedoff disable behaviour

Keep led pulsespeedoff disabled if pulsespeedon is
disabled.  This ensures that pulsespeedoff stays
disabled if onOffChangeable was set to false.  Fixes
problem where charged led pulsespeed off looks to
be configurable in the ui and thereby creating user
confusion.

Change-Id: I6ac7f630544bf719b39e1ddcab435322975430c8
settings: Remove ZRAM settings

 * Android has proper ZRAM support builtin now, and this code doesn't
   even work. Remove it.

Change-Id: I39cb20809d5c71683bffc578057ad39363c5066e
Settings: ES translations

Change-Id: Ia76cf2e4be09866ee146f16aee07a927f38ac201