[3/4] Settings: Audio Themes Settings

Change-Id: I8aad04a642441b91617943e6941841aec859396d
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
Revert "[3/3] Settings: Add NFC polling setting"

This reverts commit 51c4387479d8c6b07f1b41bdd64cf5dedb4d5955.
Merge remote-tracking branch 'omnirom/android-4.4' into HEAD

Conflicts:
	res/values/custom_strings.xml