Bug 1100200 - Part 1: Migrate to promise version. r=hsinyi
Bug 1100200 - Part 2: Merge test cases into test_incoming_basic_operations.js. r=hsinyi
Bug 1100200 - Part 3: Merge test cases into test_incoming_connecting_hangup.js. r=hsinyi
Bug 1100200 - Part 4: Merge test cases into test_outgoing_basic_operations.js. r=hsinyi
Bug 1100200 - Part 5: Merge emergency and radio-off related tests. r=hsinyi