SystemUI: fire off intent to preload along with first task

Seems to help bring it up faster~

Change-Id: I2115ad42a2fca4473f22a65ebfcdc20ac21bde5b
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Feat: Allow users to disable safe headset volume warning (1/2)

PS2: Fix Integer NPE

Change-Id: I5da8e84215a7d6e4c2f9a1f21e7239826e6f9fda
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>