Enable traffic indicator only when there is traffic - picked from DU

Change-Id: I5444594e921a45ee52174b7aa1688f5cdf69e3d4
FW: Notification panel Weather (1/2)

PS2: set it bellow quick toggles - done (I hope)

Change-Id: Ic795635bc82b3b7aa4474bd42ecb635731c713ce