Dialer: Add support for OpenCNAM paid accounts

Change-Id: I09c67eed706311a40569617980585a357f1d74aa
Merge "Dialer: Add support for OpenCNAM paid accounts" into cm-11.0
[3/3] Base: Incoming Call in Background
[2/2] Dialer: Disable Statusbar and Navbar during call by Proximity Sensor