Statusbar: Add several widgets on QuickSettings view

APN switch: add an switch into quick setting view to
select APN, When clicking the switch, the view will
be navigated to APN settings; while when long pressing
the switch, apn will switch to next configured APN
automatically.

Global roaming: add global roaming switch on the
expanded status bar, and add one more widget for data
roaming

Data swich: support switching data on/off from quick
setting view.

Change-Id: I7e07f4a6ec2414dc5d8e4e5e6f9804f98cc3be7f