bigbluebutton-web: Added a footer to welcome message. A disclaimer or copyright signature can be placed here for all the meetings in a server.
 - change bw and port test to connect to a subscope. Somehow if we don't, we can't reconnect again when all users logs out
Rename custom_record to custom_bbb_record and override welcome message when appropriate

I'm re-applying this code after reviewing the 0.1.1 version of bbb-lti. From my testing, an LTI's custom welcome message is currently being ignored.
Merge pull request #106 from jfederico/master

Added a footer to welcome message.
 - use Participants module as default
Merge pull request #107 from kishba/fix-lti-custom-welcome-message

Fixes LTI custom welcome message for bbb-lti 0.1.1
 - make JS API voice mute/unmute, etc. work with the participants module
Merge remote-tracking branch 'upstream/master'

Conflicts:
	bigbluebutton-client/resources/config.xml.template