* Update django version to 1.11.21
* Fixed issue not being able to edit /admin/entities/entity/
* Specified the aspect ratio for the video_embed
* Fixed ValidationError on helpdesk query save
* Fixed signal "create_usersettings" not working in helpdesk
* Updated event money output
* Fixed KeyError for memberships app when the payment_method field was unchecked for some reason
* Removed the path arg to avoid unnecessary connections for invoices download
* Added gratuity feature to events