Summary: Modernize remaining edges to subclass `PhabricatorEdgeType`. Largely based on D11045.
Test Plan: Browsed around and performed various actions include subscribing, unsubscribing and watching.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D11116
Summary:
Ref T4967. Adds a "Watch" relationship to projects, which is stronger than member/subscribed.
Specifically, when a task is tagged with a project, we'll include all project watchers in the email/notifications. Normally we don't include projects unless they're explicitly CC'd, or have some other active role in the object (like being a reviewer or auditor).
This allows you to closely follow a project without needing to write a Herald rule for every project you care about.
Test Plan:
- Watched/unwatched a project.
- Tested the watch/subscribe/member relationships:
- Watching implies subscribe.
- Joining implies subscribe.
- Leaving implies unsubscribe + unwatch.
- You can't unsubscribe until you unwatch (slightly better would be unsubscribe implies unwatch, but this is a bit tricky).
- Watched a project, then recevied email about a tagged task without otherwise being involved.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4967
Differential Revision: https://secure.phabricator.com/D9185
