Settings: fix quiet hours

http://jira.omnirom.org/browse/OMNI-627

Change-Id: Ica3bff10b3147120593bbe688882404625df18be
Settings: updating policy list after switching mobile data switch

Removed unnecessary call to updatePolicy() in the mDataEnabledListener since the setMobileDataEnabled() method already calls it.
Calling updatePolicy() with refreshCycle to true, so that the "change cycle..." option is enabled/disabled correctly

Change-Id: I2f8cfd898e663b644576626f00e38fff3ec0bbd8
Merge pull request #1 from omnirom/android-4.4

merge