Merge pull request #3321 from jfederico/bbb-lti_fix_newversion

...ails-app/assets/javascripts/bootstrap-confirmation.min.js

bbb-lti/grails-app/assets/javascripts/jquery-1.12.3.min.js

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

bbb-lti/grails-app/assets/stylesheets/tool.css

bbb-lti/grails-app/conf/BuildConfig.groovy

...s-app/controllers/org/bigbluebutton/ToolController.groovy

bbb-lti/grails-app/i18n/messages.properties

bbb-lti/grails-app/i18n/messages_es.properties

bbb-lti/grails-app/i18n/messages_fr.properties

bbb-lti/grails-app/views/tool/error.gsp

bbb-lti/grails-app/views/tool/index.gsp