Resetting migrations

Signed-off-by: Raphael Lullis <raphael@lullis.net>
Moving property table models to a separate module (it might be used by tenants.models)

Signed-off-by: Raphael Lullis <raphael@lullis.net>
Serializer was only working on BrowsableAPIRenderer. Fix for JSON payloads.

Signed-off-by: Raphael Lullis <raphael@lullis.net>
Merge branch 'develop' into feature/provision_history
Adding UserProvisionHistoryTable, which records new provisioning actions and updates the provisioning date based on the item_provisioned/item_deprovisioned signals

Signed-off-by: Raphael Lullis <raphael@lullis.net>