models: migrate unique_together to UniqueConstraint
Meta option unique_together might be depricated in the future and usage of UniqueConstraint instead is advised based on Django documentation. Also fix a typo.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
Meta option unique_together might be depricated in the future and usage of UniqueConstraint instead is advised based on Django documentation. Also fix a typo.