Fiduswriter

**Fixes:**
* Make navigator show in editor

**Fixes:**
* Handle external static files server

**Major features:**
* New and improved HTML exporter (easier to extend and more compliant to W3C standards)
* JATS exporter: native bibliography exporter that is not reliant on CSL so that we can export all the fields requested by users
* Bibliography: original language/place/date and short title field.
* Backend: support for Django asynchronous views (replacing tornado proxy views) to slowly remove dependency on Tornado.
* Backend: Django 3.2 => 4.1
* Frontend: replaced offline-plugin with workbox
* Book plugin: Per book language setting.

**Fixes:**
* Make word count work in Firefox

**Features:**
* Epub exporter: added `epub` to class of body.
* OJS exporter: Deal with half-blind reviewers,

**Fixes:**
* Gitrepo-export: fix for access right search

**Fixes:**
* Selenium syntax update in plugins