HALO new vertical gestures (NOT READY FOR RELEASE)

itroduces step gestures

-- Clear all notifications
-- Clear current notification

(*)

-- Hide HALO
-- Silence HALO until woken

Change-Id: I6aa871400e4c420750a050700c50301934a37d30
HALO clearall/silence and clearall-fix + dismiss icon (READY, BUT NEW STYLE IS XHDPI ONLY!)

but working ...

Change-Id: I146dbb33d1a44772ff7973b998c0e072ef38d576