XX-11315 - style fix
XX-11297 - Polycom group firmware setting overrides individual firmware setting under certain scenarios; root cause of this is that when saving a phone, a save operation is also performed on every group that the phone is in, even if basically nothing has been changed on the group. Thi fix removes this save operation.
XX-10916 - When saving a phone onSave() is triggered twice; cause is that phone context impl is listed twice as listner that would catch the onSave event.