feat: [wip] autosave drafts [3252]

Created by: Tirokk

Authored by rbeer Apr 14, 2020

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🍰 Pullrequest

Adds ProseMirror plugin AutoSave

• saves comments and posts, as they are typed
• loads last autosave when creating a new post

This really ought to be its own module prosemirror-plugin-autosave. Already a concerning amount of (wrong) coupling, like essentially testing the functionality of the plugin in the Editor spec.

Issues

• implements #3252
• relates #3461 (closed)

Todo

• Remove temporary /post/create autosave on (editor will be empty on next load)

  • submit
  • clearing editor
  • cancel?

• use id from post:last, instead of creating new

• setting for 'load last autosave'; bool might be out of scope, since it requires to add a settings page for the editor