load metadatatypes dynamically
load metadatatypes dynamically

(cherry picked from commit 1d3ba60)

tudarmstadt-lt/newsleak-frontend,thorbenwiese/newsleak-frontend,thorbenwiese/newsleak-frontend,tudarmstadt-lt/newsleak-frontend,tudarmstadt-lt/newsleak-frontend,thorbenwiese/newsleak-frontend,tudarmstadt-lt/newsleak-frontend