Use application PHIDs in Releeph, plus more

Summary:
Ref T2715. Ref T3551. Ref T603. This does a few things, but they're all sort of small:

  - We commonly use a `getX()` / `attachX()` pattern, but have very similar code in the `getX()` method every time. Provide a convenience method to make this pattern easier to write.
  - We use `willFilterPage()` in many queries, but it currently is called with zero or more results. This means we have a lot of "if no results, return nothing" boilerplate. Make it call only for one or more results.
  - Implement `PhabricatorPolicyInterface` on `ReleephBranch`. A branch has the same policy as its project.
  - Implement `ReleephBranchQuery`.
  - Move the branch PHID type to application PHID infrastructure.

Test Plan: Browsed Releeph. Used `phid.query` to query branch PHIDs.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603, T2715, T3551

Differential Revision: https://secure.phabricator.com/D6512
Use application PHIDs for mailing lists

Summary:
Ref T2715. Ref T603. Ref T2625.

  - Implement policies.
  - Use policy queries.
  - Use ApplicationSearch.
  - Use application PHIDs.

Test Plan: Browsed things with lists CC'd; edited lists; created a list, used `phid.query` to query handles.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603, T2625, T2715

Differential Revision: https://secure.phabricator.com/D6513
Use Application PHIDs for commits

Summary: Ref T2716. Ref T2715. Move CMIT to use Application PHIDs. Nothing too special here, but I consolidated some code into DiffusionCommitQuery. Depends on D6514.

Test Plan: Browsed Diffusion. Browsed Differential/Maniphest with linked commits. Used jump nav; used `phid.lookup` and `phid.query`. Used remarkup for Git and SVN repos. Grepped for PHID_TYPE_CMIT.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715, T2716

Differential Revision: https://secure.phabricator.com/D6515
Use Application PHIDs in Maniphest

Summary: Ref T2715. Switch Maniphest to the new stuff.

Test Plan: Used `phid.query`; `phid.lookup` to load objects.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6516
Use application PHIDs in Pholio Mocks

Summary: Ref T2715. Switch mocks to the new stuff.

Test Plan: Used `phid.query` and `phid.lookup` to find mocks.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6517
Remove PhabricatorPHID::fromObjectName

Summary: Ref T2715. This only ever supported like 10% of object types; get rid of it in favor of the new infra.

Test Plan:
  - Ran `bin/search index D12`; `bin/search index <some valid phid>`, `bin/search index derp`.
  - Turned off Search jump, searched for `D12`.
  - Used `phid.lookup`.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6519
Convert config to application PHIDs

Summary: Ref T2715.

Test Plan: Used `phid.query` to load config entries. Edited config entries.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6520
Use Application PHIDs in Files

Summary: Ref T2715. Move files to the new stuff.

Test Plan: Used `phid.query`; `phid.lookup` to find files.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6523
Use modern UI elements and application/event-oriented construction in Projects

Summary:
Ref T2715. This partially modernizes projects.

Precursor to using ApplicationSearch, which is a precursor to using application PHIDs.

Then, some day, we will make projects good.

Test Plan: {F51126}

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6524
Use ApplicationSearch in projects

Summary: Ref T2715. I stripped a bunch of stuff from the list since it was buggy, slow, or both. Some day, we'll rebuild it.

Test Plan: {F51128}

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6525
Use Application PHIDs in Projects

Summary: Ref T2715. Move Projects to the new stuff.

Test Plan: Used `phid.query` to load projects.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6526
Use application PHIDs in Repositories

Summary: Ref T2715. Move repositories to new app PHIDs.

Test Plan: Used `phid.lookup`; `phid.query`; browsed Diffusion.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6529
Provide a callback for Queries to filter objects from alternate result sets

Summary: Ref T2715. `PhabricatorObjectQuery` can theoretically bypass policies on its side-channel result set. This can't actually happen in practice because all the loading mechanisms are filtered, but provide a general way to implement side channel results safely.

Test Plan: Loaded some pages; see next diff.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6514
Fix "request" and "update" mail preferences for Differential

Summary:
Fixes T3030. T1977 attempted to fix this but either didn't work (I think this is the case) or was broken later. We don't send `DifferentialCommentMail` on a create or update; we send `DifferentialReviewRequestMail`.

Also update the details to be more clear.

Test Plan:
Verified review request mail is marked undeliverable:

```
$ ./bin/mail show-outbound --id 6644
...
PARAMETERS
...
mailtags: ["differential-review-request"]
...
subject: D922: asdf
subject-prefix: [Differential]
vary-subject-prefix: [Request, 100 lines]
...
RECIPIENTS
! duck (duck)
    - This mail has tags which control which users receive it, and this recipient has not elected to receive mail with any of the tags on this message (Settings > Email Preferences).

BODY
epriestley requested code review of "asdf".
...
```

Verified update mail is marked undeliverable:

```
$ ./bin/mail show-outbound --id 6646
...
Message: Message has no valid recipients: all To/Cc are disabled, invalid, or configured not to receive this mail.

PARAMETERS
...
mailtags: ["differential-updated"]
...
subject: D922: asdf
subject-prefix: [Differential]
vary-subject-prefix: [Updated, 100 lines]
...
RECIPIENTS
! duck (duck)
    - This mail has tags which control which users receive it, and this recipient has not elected to receive mail with any of the tags on this message (Settings > Email Preferences).

BODY
epriestley updated the revision "asdf".
...
```

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3030

Differential Revision: https://secure.phabricator.com/D6518
Hack up Asana story text so it's more useful

Summary: `FeedStory->renderText()` is garbage and I don't want to fix it in general until after T2222 / T2217. Provide an Asana-specific alternative for higher-quality feed stories (notably, including comment text).

Test Plan: {F51035}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2852

Differential Revision: https://secure.phabricator.com/D6521
Fix exception with "phabricator.allowed-uris" when trying to set cookies

Summary: The `phabricator.allowed-uris` config setting is not checked properly when trying to set cookies.

Test Plan:
Set an alternate URI, then accessed Phabricator. No longer received a secondary cookie error.

Hit the new exceptions to test them:

{F51131}
{F51132}

Reviewers: btrahan, garoevans

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D6528
Use ApplicationSearch in Pholio

Summary: Ref T2637. Ref T2625. Convert Pholio to use ApplicationSearch.

Test Plan:
Viewed mocks, changed filters.

Verified edit page works and no longer has a weird side nav on it.

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2625, T2637

Differential Revision: https://secure.phabricator.com/D6530
Use application PHIDs in countdown

Summary: Ref T2715. Swap countdown to application PHIDs.

Test Plan: Used `phid.lookup`; `phid.query`.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6532
Fix "setName()" on Differental revision handles

Summary: I copied this over wrong. Ref T2715

Test Plan: Looked at Maniphest with linked commits/revisions, e.g.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6531
Fix a type constant which slipped through grep

Auditors: btrahan