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
Settings: Add proximity wake-up toggle

Change-Id: I2f2449eb324f61b2f7a93acd91b99f144930e66e
DisplaySettings: Update peek pacakge name

Peek package was changed when it moved in the play store

Update it here so the system peek setting is properly disabled

Change-Id: If7acf3c3dd34b965b4a74a0ec9747178c601eda9
Signed-off-by: Evan Anderson <evananderson@aospa.co>
Merge https://gerrit.paranoidandroid.co/AOSPA/android_packages_apps_Settings into kitkat

Conflicts:
	res/xml/display_settings.xml
	src/com/android/settings/DisplaySettings.java