Gallery2: Add audio output switcher between headset/speaker

There is no audio output switcher between headset/speaker.

Add the audio output switcher button to menu list in order to
let user use this function.

CRs-Fixed: 650867

Change-Id: I16f5fdc74a76ee55557ba87b0145e51165f0408a
Gallery2: Fix menu display inconsistent with its cluster

The operation order is not correct.We should first execute
the change of cluster,then display menu title according to
the cluster.But we do the opposite operation,which cause the
menu will always display last cluster‘s corresponding menu
and cause this bug happened.

Modify the operation order.

CRs-fixed: 619812

Change-Id: I6cd3c82e065cef5a463e06295bf332e1459500e3