SystemUI: tint alternate icons (small menu, alt back, arrow keys)

Change-Id: Ida922f85b36edc7e27451f31f49b6babe9e354a5
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Merge "SystemUI: tint alternate icons (small menu, alt back, arrow keys)" into jb-mr1
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1