Allows users to save multiple topic and personal message drafts,
allowing more flexibility around content creation.
The "New Topic" button will now always start a fresh topic. Drafts can
be resumed from the drafts dropdown menu or using the "My Drafts" link
in the sidebar.
Since drafts require a unique `draft_key` and `user_id` combination, we
have updated the format of the draft key for both topics and personal
messages. They will now have a prefix like "new_topic_" or
"new_message_" with the timestamp of when the composer was first opened
appended.
BEFORE: if you click the "reply" button on a post and then decided that you want to "edit" the same post, clicking the "edit" button would do nothing. Clicking "edit" on another post works, but editing the same post would appear broken.
AFTER: if you click the "edit" button, it will properly load the content of the post you're trying to edit. No matter which one it is.
This was somewhat tricky to track down as the system specs seemed to contradict the qunit tests until I realized that the qunit tests were only testing the edit on the 1st post and the system specs were testing on replies.
I improved the qunit tests to test both editing OP and a reply and (hopefully) made the system specs a little bit clearer.
This is a follow up to bbe62d88d2554189e15f407736b1f7a01968c631.
"Resume editing" would do nothing when going through the `/new-message` flow.
This seems to be broken since [this commit](b0f6d074be). which moved `this._setModel` calls around – the same we're doing now, but to different places: the first one needs to happen after the `draft.data` has been set , while the second needs to happen before the `this.open` call.
This commit will now change two behaviors:
- If composer is already opened on a specific post and we click on edit again for the same post, we will do nothing and not show the discard draft modal
- if composer is shrinked and we click on edit for the same currently edited post, we will just open the composer and not show the discard draft modal
