Upgrade to latest grails

bbb-web-api/.gitignore

bbb-web-api/build.gradle

bbb-web-api/gradle.properties

bbb-web-api/gradle/wrapper/gradle-wrapper.jar

bbb-web-api/gradle/wrapper/gradle-wrapper.properties

bbb-web-api/gradlew

bbb-web-api/gradlew.bat

...-api/grails-app/assets/images/apple-touch-icon-retina.png

bbb-web-api/grails-app/assets/images/apple-touch-icon.png

bbb-web-api/grails-app/assets/images/favicon.ico

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

bbb-web-api/grails-app/assets/images/skin/database_add.png

...web-api/grails-app/assets/images/skin/database_delete.png

bbb-web-api/grails-app/assets/images/skin/database_edit.png

bbb-web-api/grails-app/assets/images/skin/database_save.png

bbb-web-api/grails-app/assets/images/skin/database_table.png

bbb-web-api/grails-app/assets/images/skin/exclamation.png

bbb-web-api/grails-app/assets/images/skin/house.png

bbb-web-api/grails-app/assets/images/skin/information.png

bbb-web-api/grails-app/assets/images/skin/shadow.jpg