HALO additions: clearall/silence/vertical gestures

[*] HALO cleanup & clearall-nap

Change-Id: I05e45812fa10e3f6b3818ac4a96d94c7d0d5d125

[*] HALO clearall fix: Take out duplicate

Sign-Off: Ayysir <dresadd09691@gmail.com>

[*] HALO clearall-fix + dismiss icon (READY, BUT NEW STYLE IS XHDPI ONLY!)

Change-Id: I5d47a2dda9139445503f4e93f9a72c02b48cb88d

[*] HALO clearall/silence (STILL NOT READY FOR RELEASE)

but working ...

Change-Id: Ie1c25f4ad60d2fac6321417c6fcf93e3dccd9d93

[*] 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: I4b5bb7ec612dc0eb1d95e970348b15fba1d79df0