This takes styling from the Classic Editor on Write.as.
It adds all application code for auto-saving the title, publishing it
with the post body, and including it in the word count.
This adds a new editor template that strips away most of the
customization features in the default editor and includes only:
- publishing
- editing
- viewing word count
It also restricts publishing to a user's first collection, so it's
optimized for instances that only allow users to have a single
collection and don't use Drafts.
Ref T680 T677
