Fix a spelling mistake in warning message for missing 'diff' binary

Summary: Someone in IRC helpfully pointed this out.

Auditors: btrahan
Remove PhabricatorRepository::loadAllByPHIDOrCallsign()

Summary: Ref T603. Move to real Query classes.

Test Plan:
  - Ran `phd debug pull X` (where `X` does not match a repository).
  - Ran `phd debug pull Y` (where `Y` does match a repository).
  - Ran `phd debug pull`.
  - Ran `repository pull`.
  - Ran `repository pull X`.
  - Ran `repository pull Y`.
  - Ran `repository discover`.
  - Ran `repository delete`.
  - Ran `grep`.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7137
Add viewPolicy, editPolicy, repositoryPHID columns to DifferentialRevision

Summary: Ref T603. Paves the way for policy controls.

Test Plan: Ran storage upgrade, bumbled around in Differential.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7133
Use Differential policy columns to drive policies

Summary:
Ref T603. Read policies out of policy columns.

When a revision is associated with a repository (which is currently never), require view access on the repository to see the revision (or, require the viewer to be the owner). This is a blanket "do the right thing" rule which should make Differential's default policies align with user expectations.

Future diffs will populate the `repositoryPHID` when a revision is created.

Test Plan: Tooled around Differential. None of this stuff does anything yet, so nothing very exciting happened.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7134
Show policy information in Differential header

Summary: Ref T603. Moves policy information from a custom field to the header for revisions.

Test Plan: Looked at a revision.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7135
Make most Differential reads policy-aware

Summary: Ref T603. Makes the majority of reads policy aware (and pretty much all the important ones).

Test Plan:
  - Created a comment with `differential.createcomment`.
  - Created a new revision with `arc diff` in order to exercise `differential.creatediff`.
  - Created an inline comment with `differential.createinline`.
  - Added a comment to a revision.
  - Edited an inline comment.
  - Edited a revision.
  - Wrote "Depends on ..." in a summary, saved, verified link was created.
  - Browsed a file in Diffusion.
  - Got past the code I changed in the Releeph request thing.
  - Edited a Releeph request.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7136
Add storage and classes for CustomField in Differential

Summary: Ref T3886. Adds the storage, indexes, and storage classes for modernizing Differential custom fields.

Test Plan: Ran `storage upgrade`.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3886

Differential Revision: https://secure.phabricator.com/D7138
Clean up Maniphest transaction rendering a bit more

Summary:
Ref T2217. This partially retreads the ground from D7115.

  - We're rendering silly transactions about descriptions when creating tasks. Hide those.
  - Move the "created" transaction back to status. This fixes two things that are otherwise more of a mess than I'd anticipated:
    - It fixes Reports without making a mess (see <https://github.com/facebook/phabricator/issues/395>).
    - It renders old transactions properly (i.e., "created" instead of "reopened" for tasks older than the migration).
  - Be explicit about action strength, so emails always say the most important thing in the subject.

Test Plan: Created and edited tasks, looked at resulting transactions, saw a cleaner transaction record.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2217

Differential Revision: https://secure.phabricator.com/D7141
Adjust keys for new Differential inline comment table

Summary:
Ref T2222. This sequences //before// D7139 and sorts out keys on the table. In particular:

  - There was a fairly silly `draft` key modeled after Pholio; drop it.
  - Add a `revisionPHID` key. This is queried mostly-transitionally on the revision view screen.
  - Add a `changesetID` key. This is queried by a bunch of interfaces that want more surgical results than `revisionPHID` provides.
  - Add an `authorPHID, transactionPHID` key. This is queried on the list interface to find pending drafts.
  - Add a `legacy` key. This is queried by the feed publisher.

Test Plan: Used the query analyzer to hit all (I think?) of the pages, saw keyed queries.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2222

Differential Revision: https://secure.phabricator.com/D7140
Fix spacing on Diff headers

Summary: Adds some padding to the right

Test Plan: Looked at a diff

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D7143
Allow editPolicy, viewPolicy, and repositoryPHID to be edited from the web UI in Differential

Summary: Ref T603. I think T2222 is fraught with peril so I'm not going to try to sequence it ahead of T603 for Differential. Provide access to policy controls in Differential's edit view.

Test Plan: See screenshot.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7142
Allow revisions to be queried by repository

Summary: This isn't too useful most of the time since we don't automatically populate this data yet, but works fine.

Test Plan: See screenshot.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7144
Herald - add support for "content source" conditions

Summary: ...and deploy on Maniphest. Ref T1638.

Test Plan: created a herald rule to be cc'd for tasks created via web. made a task via web and another via email and was cc'd appropriately. edited the herald to be cc'd for tasks created via not web. made 2 tasks again and got cc'd appropriately

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T1638

Differential Revision: https://secure.phabricator.com/D7145
Maniphest + Herald - add support for assigning tasks and adding projects

Summary: This ends up living in HeraldAdapter even though its "task only" stuff. Reason being There are 4 or 5 functions that have little hooks; see diff. Ref T1638.

Test Plan: made a rule to assign tasks to me if made on web - great success. made a rule to assign tasks to other guy and add a project if title contained "foobar" - great success, including some confusion as ther two herald rules fought each other for task ownership.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T1638

Differential Revision: https://secure.phabricator.com/D7146
When creating or updating a revision, infer the repository from the diff

Summary:
Ref T603. When a diff is attached to a revision, try to guess the repository if possible. In cases where we succeed, this automatically gives us intuitive policy behavior (i.e., you can see a revision if you can see the repository the change is against).

I pulled this into a funky little "Lookup" class for two reasons:

  - It's used in two places;
  - I anticipate that we might need to add some sort of `explainWhy()` method if users find the heuristics confusing.

Test Plan: Created and updated revisions, saw them pick up the correct repository association. Ran Herald dry run against associable and nonassociable revisions, saw correct values populate.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7147
Policy - make policy transactions render better in email

Summary: right now you get sent an email with a broken link 'cuz the email is plain text if you edit something with the edit policy being a project.

Test Plan: edited a legalpad document edit policy repeatedly to various projects. observed good emails via bin/mail debug tool. object page still looked good too

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D7149
Make Differential views capability-sensitive

Summary:
Ref T603. Make Differential behaviors for logged-out and underprivleged users more similar to other apps.

I'm going to drop this "anonymous access" thing at some point, but `reviews.fb.net` actually looks like it's running semi-modern code, so leave it alive until we have a more compelling replacement in the upstream.

Test Plan: As a logged out user, browsed Differential and clicked things and such.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7148
Explain policy exception rules to users

Summary:
Ref T603. Adds clarifying text which expands on policies and explains exceptions and rules. The goal is to provide an easy way for users to learn about special policy rules, like "task owners can always see a task".

This presentation might be a little aggressive. That's probably OK as we introduce policies, but something a little more tempered might be better down the road.

Test Plan: See screenshot.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7150
Provide better strings in policy errors and exceptions

Summary:
Ref T603. This could probably use a little more polish, but improve the quality of policy error messages.

  - Provide as much detail as possible.
  - Fix all the strings for i18n.
  - Explain special rules to the user.
  - Allow indirect policy filters to raise policy exceptions instead of 404s.

Test Plan: See screenshots.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7151
Make more Diffusion controllers/views capability-sensitive

Summary:
Ref T603. I got most of this earlier, but finish it up.

  - Make a couple of controllers public; pretty much everything in Diffusion has implicit policy checks as a result of building a `DiffusionRequest`.
  - Add an "Edit" capability to commits.
  - Swap out the comment thing for commits.
  - Disable actions if the user can't take them.

Test Plan: Viewed a bunch of interfaces while logged out, got appropriate results or roadblocks.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7152