Improve HeadsUp [2/2]

* See https://gerrit.paranoidandroid.co/#/c/79/
* TODO: Add ticker check experimental option to developer settings.

Signed-off-by: @BigBrother1984 <carlosavignano@aospa.co>
Change-Id: I9e17e5bd0877fc35402f58830c51a795704d632b

Conflicts:
	res/values/pa_strings.xml