Revert "Allow User ID to be blank"
Revert "Allow User ID to be blank"

grzes/djangae,armirusco/djangae,asendecka/djangae,armirusco/djangae,kirberich/djangae,asendecka/djangae,armirusco/djangae,kirberich/djangae,kirberich/djangae,potatolondon/djangae,asendecka/djangae,grzes/djangae,potatolondon/djangae,grzes/djangae