Settings: Toggle Power Saver notification (2/2)

Change-Id: I6a2a0b33007d2df5f6147c872c312d2987758e12
Settings: update translations

Change-Id: I736073e1bb6120d72ac665c9ccd97c79fbfca709
improve powersaver notification (1/2)

Change-Id: I5cae0edec696a3ad6d6b4bd813a6a59a0be303a2