SlimRecent: Make it optional [1/2]

PS1: add toggle button between AOSB && Slim Recent
PS2: don't run slim controller if not enabled
PS3: check for correct home listener button

TODO:
Disable Home Longpress
ShutDown Default recent service if slim enabled

Change-Id: Ic7746d76dd4ee5eef6464486434e7c494540b69b