Camerahub

* Use boolean comparisons which should work with Postgres and SQLite (256)

* Display booleans as icons (234)
* Remove stray brace (235)
* Allow negative EV values (236)
* Add % symbol to viewfinder coverage (238)
* Improve forms for cameramodel and lensmodel (237)
* Replace hotshoe & coldshoe with single shoe type (239)
* Set editable=False on some non-user fields (241)
* Emit logs of WARNING and above to stderr for production and debug mode (249)
* Scrap manual changelog (253)

* Add Help section with basic docs (194)
* Restyle camera model and lens model detail views (133 and 136)
* Restyle Edit link (225)
* Restyle Add link (214 and 226)

* Require disambiguation for models with the same name (221)
* Fix backup manifest
* Fix typo in doc

Dummy release to test CI/CD

* Update styling and add nav bar (178, 197)
* Add disambiguation to camera model & lens model (199)
* Shortcut static pages with views (160)
* Make model headings clickable (205)
* Collapsing subsections for inlines and actions (131)
* Implement daily database backups in prod (203)
* Swap PNG graphics for SVGs (200)
* Add basic stats page (142)
* Add homepage beta banner and jumbotron (217)
* Temporarily disable moderation until it works (202)