Caluma-alexandria

Feature
* Allow custom implementation of username and group getters ([`72bf2e4`](https://github.com/projectcaluma/alexandria/commit/72bf2e42862bb72fbd34cda059b8df0aa107ef7a))

Fix
* **core:** Add get_user_and_group for serializer ([`b5bc3b6`](https://github.com/projectcaluma/alexandria/commit/b5bc3b67645bb2fe46dc547f94f8399ee5c2ecb7))

Fix
* **mime:** Allow file extension checking if all fails ([`ddaa134`](https://github.com/projectcaluma/alexandria/commit/ddaa1344b2cde98a0c52f3311772d36da6e28c28))
* Use atomic for document and file creation ([`1a630ad`](https://github.com/projectcaluma/alexandria/commit/1a630adb83a8351d1ed01b3070790e65b00cc43d))

Fix
* **thumbnails:** Enlarge the thumbnails ([`a80f7b5`](https://github.com/projectcaluma/alexandria/commit/a80f7b535ba21e3c8a3c23318cb95ca4be70f273))

Feature
* **document:** Create document and file in one request! ([`444912d`](https://github.com/projectcaluma/alexandria/commit/444912d4cb584c05096ca8a78dd455b8471e9441))

Breaking
* The document post endpoint now requires the file data to be provided as well. The reason for this change is allowing the frontend to create documents and files in one request, preventing documents with no associated files. Which fixes the problem if the file got rejected for any reason, the application would create an empty document. ([`444912d`](https://github.com/projectcaluma/alexandria/commit/444912d4cb584c05096ca8a78dd455b8471e9441))

Feature
* **category:** Define allowed mime types ([`d4fd84e`](https://github.com/projectcaluma/alexandria/commit/d4fd84e6edb0502818f885082217aa48f0e56c5b))

Fix
* **mimetypes:** Cleanup, simplify error handling ([`3bde9c4`](https://github.com/projectcaluma/alexandria/commit/3bde9c490f5ba67d4859767fa37afeabba3f1326))
* **translation:** Use string replacement instead of f string ([`74dd485`](https://github.com/projectcaluma/alexandria/commit/74dd485587e30765bea4a784beead595a33df405))
* **migrations:** Add missing migration for modified by description ([`7f53058`](https://github.com/projectcaluma/alexandria/commit/7f5305820f3e76e1ff6d06bfaa2d7af7d97cd08c))
* **upload:** Use content-type and filename to infer mime types ([`d475321`](https://github.com/projectcaluma/alexandria/commit/d475321d23a7a21037b3012fd4aebeb6cb78b134))

Fix
* **dav:** Set created_by_* attributes on new files ([`f480cb6`](https://github.com/projectcaluma/alexandria/commit/f480cb670bf359adee82ac49ec59ee2c018df8ab))