add dslv controller

a lot of our settings have drag swipe features
this is the central controller for it to have
easy access

Change-Id: I9eb9849f2585510649f49c75915b0c7f3c508fdd
Add CPU & RAM info.

PS 2 : Cleanup

Change-Id: I0cce559c86321827d6f920d61ad9dfcb34a63b3c

Conflicts:
	res/values/slim_strings.xml
	res/xml/device_info_settings.xml
	src/com/android/settings/DeviceInfoSettings.java
Settings: Allow All Widgets On Keyguard (2/2)
Original SlimRoms commit:
https://github.com/SlimRoms/packages_apps_Settings/commit/48cd5f0b29bd80bf2d8bd5e8ca490a0c3af73a2c