username validation fixed
username validation fixed

jochenklar/daiquiri,adrpar/daiquiri,aipescience/daiquiri,aipescience/daiquiri,jochenklar/daiquiri,aipescience/daiquiri,aipescience/daiquiri,adrpar/daiquiri,jochenklar/daiquiri,jochenklar/daiquiri,adrpar/daiquiri,adrpar/daiquiri