Battery statusbar indicator controls (2 of 2)

Summary:
Show/hide icon and text indicators
text inticator show/hide %

Change-Id: I7d4f692035932d9c1b6f8db1030345eb4ae4eec1

Test Plan: see if any derp slipped in, should be solid

Reviewers: synergy

Reviewed By: synergy

CC: anders3408

Differential Revision: http://review.codefirex.com/D431