bbb-lti: Updated grails to 2.5.2

bbb-lti/.asscache

bbb-lti/application.properties

bbb-lti/build.xml

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

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

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

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

bbb-lti/grails-app/conf/lti-config.properties

bbb-lti/grailsw

bbb-lti/grailsw.bat

bbb-lti/ivy.xml

bbb-lti/ivysettings.xml

bbb-lti/web-app/WEB-INF/applicationContext.xml

bbb-lti/web-app/WEB-INF/tld/grails.tld

bbb-lti/web-app/WEB-INF/tld/spring-form.tld

bbb-lti/web-app/WEB-INF/tld/spring.tld

bbb-lti/web-app/js/prototype/animation.js

bbb-lti/web-app/js/prototype/builder.js

bbb-lti/web-app/js/prototype/controls.js

bbb-lti/web-app/js/prototype/dragdrop.js