Let accessibility feature instructions scroll.

Change-Id: Ie0a9eae16e8bf2ea6033a9e5e4e2c149ab4859cc
JIRA:CYAN-1531
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

Requires http://review.cyanogenmod.org/#/c/44585/

Change-Id: I42aebc9fc0d3530cf0a3efb4d2139b688707d43d
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Settings: Specify notification types for Auto Hide statusbar (2/2)

Allows users to choose between "non-permanent only" and "all notifications" in the autohide
the statusbar when there are no notifications check.

Change-Id: I6b6484817b52bd14a428a3515f08b0a58927f38d