Merge remote-tracking branch 'upstream/master' into reconnection-improvement

bbb-lti/build.gradle

bbb-lti/gradle/wrapper/gradle-wrapper.jar

bbb-lti/gradle/wrapper/gradle-wrapper.properties

bbb-lti/grails-app/assets/images/advancedgrails.svg

bbb-lti/grails-app/assets/images/documentation.svg

...i/grails-app/assets/images/grails-cupsonly-logo-white.svg

bbb-lti/grails-app/assets/images/grails.svg

bbb-lti/grails-app/assets/images/slack.svg

bbb-lti/grails-app/assets/javascripts/bootstrap.bundle.js

...lti/grails-app/assets/javascripts/bootstrap.bundle.js.map

...lti/grails-app/assets/javascripts/bootstrap.bundle.min.js

...grails-app/assets/javascripts/bootstrap.bundle.min.js.map

bbb-lti/grails-app/assets/javascripts/bootstrap.js

bbb-lti/grails-app/assets/javascripts/bootstrap.js.map

bbb-lti/grails-app/assets/javascripts/bootstrap.min.js

bbb-lti/grails-app/assets/javascripts/bootstrap.min.js.map

bbb-lti/grails-app/assets/javascripts/jquery-3.3.1.min.js

...lti/grails-app/assets/javascripts/jquery-3.3.1.min.js.map

bbb-lti/grails-app/assets/javascripts/popper.min.js

bbb-lti/grails-app/assets/stylesheets/bootstrap-grid.css