Themes: Allow changing theme to Holo.Light without crashing

Themes that attempt to change the settings theme's parent to
Holo.Light will end up crashing wifi settings.

Themers should override Theme.Settings.Base and leave Theme.Settings.Holo
alone.  Attempting to theme Theme.Settings.Holo will result in crashes
when accessing wifi settings.

This was patch was adapted from
https://github.com/tung91/android_packages_apps_Settings/commit/007f03b559c6d13115c63c4f601ebc4b9324d32d

Change-Id: I61951b892acac6304d2c3dd02668eb70af93eef9

Conflicts:
	res/values/themes.xml
Automatic Translation Import

Change-Id: Ia292c19890f6c2de7fe63af93ba0fa24d0c73282
DayDream: remove duplicates

Fixes AOSPA-69

Change-Id: Iffaef61a54227ffb3eb6388631ce9dd67a5246b6
Allow hiding of the battery status bar indicator

This commit simply adds a special value for a hidden status bar
indicator. This works due to the fact that the existing indicators
check that the current value matches their one which means that if
no indicators will be visible if no matches are found. This is usable
by people who like minimalistic aproaches and also assists people who
modify their systems to add some special battery indicators that are
no provided by the default system (as otherwise they would end up with
two indicators side-by-side).

It should still be noted that without changes in the system UI the QS
tile for battery looks a bit weird when this is applied as the battery
indicator disappears from there as well.

Change-Id: Ie23382817e00a4a9a13115cba2db789d038910a7