Settings: Battery Options

Until we find a suitable solution for displaying the text percentage
on the battery bar, hide the option.

Change-Id: I07cc98d3ee32c037c9dcf1f8b2ecb368c96aab47
Address the 'ART' Issue

Rather than outright remove this completely, address primary concerns:

* Add a more verbose warning message on alert dialog
* Explicitly state experimental form
* Explicitly state not supported (no bug reports)
* Explicitly state issues (crashes, bootloop, etc)

See prior discussion: http://review.cyanogenmod.org/#/c/55609/

PS2: Linkify

Change-Id: Icf103b5576c8e93f8a30ccd348476bf207401355

Conflicts:
	res/values/pa_strings.xml
Only show ART information if switching from dalvik to ART

We do not want to confuse users with a big information dialog, if
they change from ART to dalvik as dalvik is still the official
solution, supported and considered safe.

Change-Id: I0ce4846e0bb751e87e5c410e668d4bc521380141
Fix: Ensure lockscreen see through setting persists after reboot

If see through was enabled and the device was rebooted,
the user had to toggle the setting off and on again to activate.

Change-Id: Ic743986d9b0abae138e2291864ce527c4f9ff864