Closes: #15842
Branched from #18145 by @tobiasge
Provides a new LOGIN_FORM_HIDDEN setting which allows the administrator to hide the local login form, intended only to be used when SSO is used exclusively for authentication. Note that this means local login will be impossible in the event of SSO provider issues, and can be remedied only through a change to the application config and a restart of the service.
* #15842 - Hide login form
This doesn't implement the full solution proposed in #15842 but enables
administrators to hide the login form when users should only login with a SSO
provider. To prevent a complete lockout when the SSO provider is having
issues the GET parameter `skipsso` can be added to the login URL to show
the form regardless.
* Remove skipsso backdoor
* Add warning
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Co-authored-by: Tobias Genannt <tobias.genannt@qbeyond.de>
* Initial work on #15621
* Signal receiver should ignore models which don't support notifications
* Flesh out NotificationGroup functionality
* Add NotificationGroup filters for users & groups
* Separate read & dimiss actions
* Enable one-click dismissals from notifications list
* Include total notification count in dropdown
* Drop 'kind' field from Notification model
* Register event types in the registry; add colors & icons
* Enable event rules to target notification groups
* Define dynamic choices for Notification.event_name
* Move event registration to core
* Add more job events
* Misc cleanup
* Misc cleanup
* Correct absolute URLs for notifications & subscriptions
* Optimize subscriber notifications
* Use core event types when queuing events
* Standardize queued event attribute to event_type; change content_type to object_type
* Rename Notification.event_name to event_type
* Restore NotificationGroupBulkEditView
* Add API tests
* Add view & filterset tests
* Add model documentation
* Fix tests
* Update notification bell when notifications have been cleared
* Ensure subscribe button appears only on relevant models
* Notifications/subscriptions cannot be ordered by object
* Misc cleanup
* Add event icon & type to notifications table
* Adjust icon sizing
* Mute color of read notifications
* Misc cleanup
* Introduce custom form widget templates to apply CSS classes
* Apply both mandatory and optional CSS classes to form widgets
* Omit required & placeholder attrs
* Move annotation of field validation failures to CSS
* Remove BootstrapMixin class
* Remove obsolete ComponentTemplateImportForm class
* Remove obsolete custom forms for login & password change
* Clean up obsolete accommodations for 'required' widget attr
