Update viber.py
Update viber.py

If contact does not have an email or phone number then create a TSK_Contact artifact outside of comms helper so we do not loose the contact.

wschaeferB/autopsy,esaunders/autopsy,rcordovano/autopsy,rcordovano/autopsy,esaunders/autopsy,rcordovano/autopsy,esaunders/autopsy,rcordovano/autopsy,wschaeferB/autopsy,wschaeferB/autopsy,wschaeferB/autopsy,wschaeferB/autopsy,rcordovano/autopsy,rcordovano/autopsy,esaunders/autopsy,esaunders/autopsy