Update to support 'Groovy' language for functions
Fix for trailing slash added when executing functions. It causes server to pass an extra (null) parameter to OFunction being called. The JavaScript engine doesn't mind since JavaScript is quite relaxed about additional parameters but the Groovy engine expects function calls to match the number of arguments being passed (like Java)
Fix for the issue in Studio that causes function parameters not to be URL encoded (https://github.com/orientechnologies/orientdb/issues/2819)
Merge pull request #139 from emrul/2.0

Update to support 'Groovy' language for functions