Add recents ram bar, (1/2):

Ported from Slimroms:

https://github.com/SlimRoms/packages_apps_Settings/commit/fb2ea42468bea20f09b99048c9e7535b6cde643f
https://github.com/SlimRoms/packages_apps_Settings/commit/4ebb52df155739cb2378810a18c0303da12a31e1