Re-add auto brightness configuration UI (2/2).

Change-Id: I6c56a48fa2145c58a5f203ed56051451ef3f977d

Conflicts:
	res/values/attrs.xml
	res/values/slim_strings.xml
Performance Settings!!!!!!!!

Also squashed several other followup commits from
AlmightyMegadeth00
nuclearmistake

Patch set 7:  Moved PURGEABLE_ASSETS to main settings page
              Removed memory_management page and java file
              Compiles fine, currently untested

Patch set 8:  Added preliminary voltage control settings
              Compiles fine, currently testing

Patch set 9:  Fixed voltage settings FC
              Compiles fine, tested working

Patch set 10:  Removed warning dialog
               Removed memory_management.xml
               Cleaned up strings.xml
               Compiles fine, tested working

Patch set 11:  Cleaned up the code for future additions
               Compiles fine, tested working

Patch set 12:  changed icon, moved to system, added device hardware information
               note: needs accompanying build.prop edits. will push later.

Patch set 13:  Removed duplicate (kinda) string entry
               Removed more whitespaces
               Removed unused comments to clean up
               Removed the last of the ZRAM entries
               Cleaned up some code alignment

Patch set 14:  Rebased

Patch set 15:  Updated to match currently merged source
               Removed unused comment line in strings.xml

Patch set 16:  Removed Hardware Info for now
               Cleaned up a couple whitespaces

Patch set 17:  Small FC fix I just noticed entering About Phone

Change-Id: I52439c9c0e65dcccc6cb4834fcf91cf3cac43dee

Conflicts:
	AndroidManifest.xml
	res/values/arrays.xml
	res/values/strings.xml
	res/xml/settings_headers.xml