Summary:
Ref T4807. This is probably a complete fix, but I'd be surprised if there isn't a little cleanup I missed.
When users drag tasks on a "natural"-ordered workboard, leave things where they put them.
This isn't //too// bad since a lot of the existing work is completely reusable (e.g., we don't need any new JS).
Test Plan:
- Dragged a bunch of stuff around, it stayed where I put it after dropped and when reloaded.
- Dragged stuff across priorities, no zany priority changes (in "natural" mode).
- Created new tasks, they show up at the top.
- Tagged new tasks, they show up at the top of backlog.
- Swapped to "priority" mode and got sorting and the old priority-altering reordering.
- Added tasks in priority mode.
- Viewed task transactions for correctness/sanity.
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: chad, epriestley
Maniphest Tasks: T4807
Differential Revision: https://secure.phabricator.com/D10182
59a85e8845