[1/2] Add a circlular memory indicator to the recent panel view

Originally picked from Chameleon OS
http://goo.gl/vgL71x

Modifications:
It allows to be toggled on/off as well as setting a custom location.

Colors are not solid, they have an alpha channel to provide
transparency, this way it doesnt interfer much with the recents
panel view.

Screenshot:
http://goo.gl/Th7g0j

Change-Id: I8e332f923d4b8a96fb1033b5fa3fbd2cbab25552