MSIM: Ui fixes, replace Subscriptions with real operator names

Add Sim slot number after Operator name and check
for SIM_STATE_ABSENT and display No SIM instead of NULL

Change-Id: I2a340487fcb01dde1a50f5a45c71cd61711380c3
Merge "MSIM: Ui fixes, replace Subscriptions with real operator names" into cm-11.0