Clean up some ordering and strata edge cases in Phrequent

Summary:
Ref T3569. Two issues:

  # Since `sort()` is not stable, instantaneous events (ending on the same second they start) would sometime sort wrong and produce the wrong results. Guarantee they sort correctly.
  # Because events can end at any time, there are some additional special cases the algorithm didn't handle properly. Draw a bunch of ASCII art diagrams so these cases work properly.

Test Plan:
  - No more fatal when tracking an object for the first time.
  - Unit tests.

Reviewers: btrahan

Reviewed By: btrahan

CC: skyronic, aran

Maniphest Tasks: T3569

Differential Revision: https://secure.phabricator.com/D7350
Clean up supplemental capabilitiy checks in transaction edits

Summary:
We have this commented-out chunk of code now which was originally buggy and is now just nonfunctional.

For now, the core edit types don't always require CAN_EDIT (e.g., subscribe, comment, add edges), except for editing the edit policy itself, which always does. Add a supplemental capability check there and let everything else go through with CAN_VIEW. We can buff the policy checks on application editors over time, they all require appropriate capabilities to get to in the first place anyway.

Test Plan: Created and edited some tasks without getting overwhelmed with policy exceptions.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7351
Remove "ManiphestTransactionEditorPro"

Summary: Drop the "Pro" bit.

Test Plan: Created/edited tasks, moved tasks around, generally made a mess. Nothing burned down.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7352
Fix "Manage herald rules" link by removing it

Summary: Fixes T4001. I broke this some time ago and no one has complained. I don't think it gets much use, and we haven't added it for the newer apps. Just get rid of it rather than adapt the URIs for ApplicationSearch.

Test Plan: Unit tests, sent myself some email.

Reviewers: zeeg, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4001

Differential Revision: https://secure.phabricator.com/D7355
Add capabilities for editing task triage details (priority, assignee, etc)

Summary:
This is primarily a client request, and a little bit use-case specific, but policies seem to be holding up well and I'm getting more comfortable about maintaining this. Much if it can run through ApplicationTransactions.

Allow the ability to edit status, policies, priorities, assignees and projects of a task to be restricted to some subset of users. Also allow bulk edit to be locked. This affects the editor itself and the edit, view and list interfaces.

Test Plan: As a restricted user, created, edited and commented on tasks. Tried to drag them around.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7357
Stop writes to the old Relationship table

Summary: Ref T1279. The new stuff seems stable, so stop writes to the old tables.

Test Plan:
  - Added and removed reviewers.
  - Grepped for `::RELATIONSHIP_TABLE` to verify we really have no more reads.
  - Grepped for `::RELATION_REVIEWER`.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1279

Differential Revision: https://secure.phabricator.com/D7360
Tie application event listeners to the applications they listen for

Summary:
Ref T3675. Some of these listeners shouldn't do their thing if the viewer doesn't have access to an application (for example, users without access to Differential should not be able to "Edit Tasks"). Set the stage for that:

  - Introduce `PhabricatorEventListener`, which has an application.
  - Populate this for event listeners installed by applications.
  - Rename the "PeopleMenu" listeners to "ActionMenu" listeners, which better describes their modern behavior.

This doesn't actually change any behaviors.

Test Plan: Viewed Maniphest, Differntial, People.

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3675

Differential Revision: https://secure.phabricator.com/D7364
Make event-triggered actions more aware of application access

Summary:
Fixes T3675.

  - Maniphest had a couple of old non-event listeners; move them to events.
  - Make most of the similar listeners a little more similar.
  - Add checks for access to the application.

Test Plan:
  - Viewed profile, project, task, revision.
  - Clicked all the actions.
  - Blocked access to various applications and verified the actions vanished.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3675

Differential Revision: https://secure.phabricator.com/D7365
Add custom field storage to Projects

Summary: Ref T4010. Adds storage and indexes for custom fields. These tables are the same as people/maniphest/differential.

Test Plan: Ran `bin/storage upgrade`.

Reviewers: chad, btrahan

Reviewed By: chad

CC: aran

Maniphest Tasks: T4010

Differential Revision: https://secure.phabricator.com/D7369
Reduce surface area of DifferentialComment API

Summary:
Ref T2222. Shrink the API to make it easier to move this object's storage to ApplicationTransactions.

Fixes T3415. This moves the "Summary" and "Test Plan" into the property list, and thereby fixes all the attribution problems associated with commandeering, creating a revision from another user's diff, etc.

Test Plan: Browsed several revisions.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3415, T2222

Differential Revision: https://secure.phabricator.com/D7375
Merge branch 'master' of http://github.com/facebook/phabricator