OPEN - task 6: http json api for metadata queries 
http://github.com/lumue/mediaitems/issues/issue/6
OPEN - task 6: http json api for metadata queries 
http://github.com/lumue/mediaitems/issues/issue/6
OPEN - task 6: http json api for metadata queries 
http://github.com/lumue/mediaitems/issues/issue/6