Settings: make unaccounted and over-counted battery usage configurable

Google disabled it for release builds here:

https://github.com/SlimRoms/packages_apps_Settings/commit/e6793771cedb47aed72f1c64f870b70357746938

well but it is enabled for whatever other type of builds beside the
official release builds. That said it should
be a developer option so or so and not build type dependent.

Whatever added an option into developer settings to control it. Default
value is false.

That said.....finally no complain about misc battery stat in battery
settings xD

Conflicts:
	res/values/slim_strings.xml
	src/com/android/settings/DevelopmentSettings.java

Change-Id: I7549b1c796d5d9413b4af5d80a31d6efeaf0352a
Signed-off-by: STELIX <ssspinni@gmail.com>
Settings - DevelopArea: CheckBoxes to Switches

Change-Id: I01e7700a6ebd08be3386f3587e3316a364bca66c
Signed-off-by: STELIX <ssspinni@gmail.com>
Revert "Settings - bring back PerformanceControl [1/2]"

This reverts commit b98a15b7f6338f04b008e3e596484903b41c9a3d.