added a SDP hack for Firefox to replace the 0.0.0.0 in the c line
Merge pull request #419 from SenecaCDOT-BigBlueButton/mangle-firefox-sdp-c

Added a SDP hack for Firefox to replace the 0.0.0.0 in the c line
sending the externalMeetingId from bbb-web to bbb-apps, so bbb-apps can use it on redis pubsub message meeting_created_message
Merge remote-tracking branch 'mconf/external-meeting-id-into-apps' into webhooks-2.0
Webhooks: keep a mapping of internal and external meeting IDs