Settings: CS translation - missing strings after last commits

Change-Id: I2cdd7a6816855f6634cfba9faa1118b38a61da0a
Settings: Don't crash if we pause too quickly

Notifier is unregistered in every case in pause.
However, if you close the Settings app too quick, the notifier
might not be registered at all, causing an IllegalArgumentException
during the unregistering.

Change-Id: I54141cbfc91d08c28ef524f4155b673ae8dee90e
[3/4] Settings: Audio Themes Settings

Change-Id: I8aad04a642441b91617943e6941841aec859396d
Merge "Settings: Don't crash if we pause too quickly" into android-4.4
Merge "Settings: CS translation - missing strings after last commits" into android-4.4
Merge "[3/4] Settings: Audio Themes Settings" into android-4.4
[2/2] Settings: Disable safe headset volume warning

Base: https://gerrit.omnirom.org/#/c/5201/

PS4
adjust default value

PS5
-minor string change
-update also the volume adjust sound summary
which was wrong for a long time :)

Change-Id: I60d62b6bc182afb731d15c7e55220fc283e7f082
Merge remote-tracking branch 'omni/android-4.4' into android-4.4