Merge code and add CallStats in multi sim

The MultiSim call fragment merged the different fragments under a spinner
and also allowed you to filter call type instead of using different fragments.
I ripped out the old code and adapter the multisim fragment to handle both
multi and single scenarios.  Added the call stats and adapter it to handle both
multi and single scenarios as well.

Change-Id: I41389bbab302ff38bf0dac002c7ac8b10280fac2