Merge branch 'master' of https://github.com/bigbluebutton/bigbluebutton into user-manage-C

.travis.yml

...tml5/imports/api/voice-users/server/methods/muteToggle.js

...uebutton-html5/imports/ui/components/user-list/service.js

bigbluebutton-html5/private/config/settings.yml

build_script.sh