Backport https://github.com/go-gitea/gitea/pull/39869
`PATCH /repos/{owner}/{repo}/milestones/{id}` always overwrote the due
date with `due_on`, so a request that only changed other fields, such as
`{"state": "closed"}`, silently removed it.
The due date is now kept when `due_on` is omitted, and `"due_on": null`
or `"due_on": ""` remove it.
Only the milestone fix is backported. The issue and pull request
deadline changes of https://github.com/go-gitea/gitea/pull/39869 build
on https://github.com/go-gitea/gitea/pull/38677, which isn't on v28.
## ⚠️ BREAKING ⚠️
- delete reaction endpoints is changed to return 204 No Content rather
than 200 with no content.
## Summary
Add swagger:enum annotations and migrate all enum comments from the
deprecated comma-separated format to JSON arrays. Introduce
NotifySubjectStateType with open/closed/merged values. Fix delete
reaction endpoints to return 204 instead of 200.
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
* Add Created and Updated to Milestone table and expose via API
* Expose to UI - To Overloaded ?!?
* fix unit test
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
* API allow to create closed milestones
* set CloseDate too
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
