STANBOL-893: fixed a bug in the canEnhance(..) method. The engine should no longer send requests for unsupported languages to the remote service; corrected some errors in the metatype.properties file

git-svn-id: https://svn.apache.org/repos/asf/stanbol/trunk@1436306 13f79535-47bb-0310-9956-ffa450edef68