Fiduswriter

**Features:**
* Jest unit test management command (thanks to ben-tinc )

**Fixes:**
* Fix checks for global variables
* Fix math in HTML export filter

**Breaking changes:**
* Plugin authors: please note that in the JavaScript code, the variable `transpile.VERSION` has been renamed to `transpile_VERSION` and all `settings.*` variables are now names `settings_*`.

**Fixes:**
* JS error reporting when running static on separate domain

**Features:**
* Source maps for JS errors

**Fixes:**
* Escape MathML

**Fixes:**
* Formula output in docx export on Firefox
* Keep figure id when changing figure

**Fixes:**
* Error thrown when saving deleting document
* Error shown when image cannot be saved
* Let users with document access see associated revisions

**Tests:**
* add test for correct link label for figures

**Fixes:**
* Figure internal targets