The previous excerpt was a simple truncated raw message. Starting with
this commit, the raw content of the draft is cooked and an excerpt is
extracted from it. The logic for extracting the excerpt mimics the the
`ExcerptParser` class, but does not implement all functionality, being
a much simpler implementation.
The two draft controllers have been merged into one and the /draft.json
route has been changed to /drafts.json to be consistent with the other
route names.
We don't want to show the draft checkmark in the composer when drafts are saved, as it’s a little bit distracting to see it keeps appearing and disappearing. Only in the case of error does it need to show anything, we will be showing a "drafts offline" warning as we did it before.
An important detail is that the warning was appearing and disappearing all the time too. Now, the warning won’t be flashing while a user is typing, it’ll be disappearing only when the draft was eventually saved.
