[React] New markdown editor

[SchrodingersGat]

For fields that support markdown (like "notes") we currenly use easymde.

However it looks like mdx-editor would be a better choice - https://github.com/mdx-editor/editor

It supports mode advanced editing features (including image resizing) and a better, more "modern" look and feel. Better react support too.

[matmair]

Something more modular (enableing mentions and inline links linke GitHub has) like tiptap might also be intresting

[wolflu05]

I like that there is a WYSIWYG and diff editor, but still a source editor. But we need to consider that change well, because there are some special markdown flavors involved that maybe people will use and break later if we migrate to something else.

[github-actions]

This issue seems stale. Please react to show this is still important.

[SchrodingersGat]

Not stale