AFWA-8 AFWA-14 WIP: Minor corrections for testing without local.js
AFWA-8 AFWA-14 ENH: Added server code to send invitation over GCM. May need more testing, esp. with config file for ADM included to test ADM messaging.
Major changes:
 - Corrected typo error.
Merge branch 'master' of https://github.com/Temasys/getaroom_server