Adds a new plugin setting that when enabled adds a status field for every assignment. This setting defaults to off.
The possible status for an assignment are customizable via yet another new setting, and the first one on this list will be the default status for new assignments.
The status is not yet show anywhere except the assign modal and the small action posts in topics at the moment. Adding status to the assignment list for users and groups will be handled in the near future.
Co-authored-by: Penar Musaraj <pmusaraj@gmail.com>
When topic is closed, we mark assignments as "inactive". Then when it is reopen and setting reassign_on_open is enabled, we bring back previous assignments.
We were already using custom fields for archive message and move to inbox. I changed custom fields solution to use active flag on Assignment model
Change `topic_id` to polymorphic approach (In the next step we will allow assigning to individual post)
`topic_id` column is still used for efficient display of assigned users on topic list (to avoid scanning posts)
Ability to assign groups.
To assign group, user must have a right to send a message to that group.
In addition, 2 jobs were introduced, - AssignNotification and UnassignNotification to inform interested users in the background about the new assignment.