Camerahub

Features
* Track length and status of bulk films (642)
* Make bulk film clickable in film detail (641)
* Improve Teleconverter display (665)
* Add Disambiguation and Image fields to the new object types Enlarger, Teleconverter, Flash (664)
* Many improvements to Negative workflow (649)
* Disable l10n and use international datetime formats (657)

Fixes
* Fix path to missing icon (662)

Ops
* Improvements to storage settings (654)
* Add ability to take/restore database backups (666)

Test release which include backup scripts and `pg_dump`

* Bugfixes for crashes (659 and 660)
* Refactor Enlarger, Flash, and Teleconverter as public models, the same way as Camera (619)
* Use date picker widget for bulk film (643)
* Simplify admin site config (644)
* Display push/pull icon in film detail (638)
* Define model icons based on a callable, rather than interpolating the model name (647)
* Add "X years ago" dates after most dates displayed in CameraHub, where suitable (640)
* Display icons by expired films (639)

* Disable health probes until we know why they're failing (623)
* Update Ubuntu mirrors before installing deps (634)
* Only build on PRs, not commits (634)

* Fix URL namespacing bugs
* Don't use fictitious option --dev
* Add liveness and readiness probes (623)

* Drop excess filter fields on Negative (621)
* Disable CSRF token for cleaner filter URLs (617)
* Improve Scan FK validation (625)
* Create non-unique slug field for negatives (379)
* Add simple API (5)
* Update python deps
* Update Github actions (630)
* Drop Repair model (618)
* Display a reset filter button when a filter returns no results (604)