Add a circlular memory indicator to the recent panel view (2/2)

Picked from Chameleon OS
http://goo.gl/vgL71x

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

Frameworks Part:
https://gerrit.omnirom.org/#/c/3008/

Change-Id: I07999d476a16d24ddf9c6de441ae646887da8074
Revert "[2/2] OmniGears: Pimp up ActiveDisplay"

This reverts commit fbf72846377ebdc1893269df93e637b197a8e81d.
Revert "[3/3] OmniGears: Add ActiveDisplay settings to menu"

This reverts commit a07d7c53e4d3f1c9d2f56231c49dd493b48d14bc.

Conflicts:

	res/values/custom_attrs.xml
	res/values/custom_strings.xml

Change-Id: I89c7f52c06638eab510e1e3e8e44c70be216ca1e