Integrate ApplicationSearch with CustomField

Summary:
Ref T2625. Ref T3794. Ref T418. Ref T1703.

This is a more general version of D5278. It expands CustomField support to include real integration with ApplicationSearch.

Broadly, custom fields may elect to:

  - build indicies when objects are updated;
  - populate ApplicationSearch forms with new controls;
  - read inputs entered into those controls out of the request; and
  - apply constraints to search queries.

Some utility/helper stuff is provided to make this easier. This part could be cleaner, but seems reasonable for a first cut. In particular, the Query and SearchEngine must manually call all the hooks right now instead of everything happening magically. I think that's fine for the moment; they're pretty easy to get right.

Test Plan:
I added a new searchable "Company" field to People:

{F58229}

This also cleaned up the disable/reorder view a little bit:

{F58230}

As it did before, this field appears on the edit screen:

{F58231}

However, because it has `search`, it also appears on the search screen:

{F58232}

When queried, it returns the expected results:

{F58233}

And the actually good bit of all this is that the query can take advantage of indexes:

  mysql> explain SELECT * FROM `user` user JOIN `user_customfieldstringindex` `appsearch_0` ON `appsearch_0`.objectPHID = user.phid AND `appsearch_0`.indexKey = 'mk3Ndy476ge6' AND `appsearch_0`.indexValue IN ('phacility') ORDER BY user.id DESC LIMIT 101;
  +----+-------------+-------------+--------+-------------------+----------+---------+------------------------------------------+------+----------------------------------------------+
  | id | select_type | table       | type   | possible_keys     | key      | key_len | ref                                      | rows | Extra                                        |
  +----+-------------+-------------+--------+-------------------+----------+---------+------------------------------------------+------+----------------------------------------------+
  |  1 | SIMPLE      | appsearch_0 | ref    | key_join,key_find | key_find | 232     | const,const                              |    1 | Using where; Using temporary; Using filesort |
  |  1 | SIMPLE      | user        | eq_ref | phid              | phid     | 194     | phabricator2_user.appsearch_0.objectPHID |    1 |                                              |
  +----+-------------+-------------+--------+-------------------+----------+---------+------------------------------------------+------+----------------------------------------------+
  2 rows in set (0.00 sec)

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418, T1703, T2625, T3794

Differential Revision: https://secure.phabricator.com/D6992
Provide generalized custom field storage and custom field indexes in Maniphest

Summary: Ref T418. Depends on D6992. This adds index and value storage for Maniphest custom fields.

Test Plan: Ran storage upgrade.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D6995
Remove ManiphestTaskExtensions

Summary: Ref T418. Maniphest has an obsolete class-based field selector. Replace it with CustomField-based selectors, which use the nice config UI and are generally way easier to use.

Test Plan: Added custom fields; edited and viewed custom fields on tasks. Everything worked as expected.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D6998
Migrate auxiliary field storage to common field storage

Summary: Ref T418. Moves data from the Maniphest-specific table to the general one. This patch is a bit gross, but mostly about getting the reads and writes aimed correctly. Future patches will clean things up.

Test Plan: Migrated data across formats. Verified it survied the migration. Viewed and edited tasks' custom fields.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D6999
Route Maniphest detail view through common custom field code

Summary: Ref T418. Run all the meaningful stuff on the detail page out of shared code.

Test Plan: Looked at detail page, saw custom fields.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D7000
Route Maniphest editing and transactions primarily through shared code

Summary: Ref T418. Although Maniphest does not use ApplicationTransactions, we can fake a lot of it and provide a more uniform API. Deletes as much custom code from Maniphest as possible along the edit workflows, using core code instead.

Test Plan:
With custom fields:

  - Edited a task.
  - Created a task.
  - Queried a task with Maniphest.
  - Updated a task with Maniphest.
  - Used `?template=nnn` to create a similar task.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D7001
Provide ApplicationSearch hooks in Maniphest

Summary: Ref T418. Adds hooks to support customized ApplicationSearch (you can't currently add indexable fields without writing custom code).

Test Plan: Wrote custom code to add an indexable field.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D7002
Use classes to define standard field types and implement an "int" type

Summary:
Currently, `ManiphestAuxiliaryFieldDefaultSpecification` uses about a dozen giant `switch` statements to implement stadard field types (int, string, date, bool, select, user, remarkup, etc). This is:

  - pretty gross;
  - not extensible; and
  - doesn't really let us share that much code.

I got about halfway through porting a similar implementation into StandardField but I wasn't thrilled with it. Subclass StandardField instead to implement custom field types.

Test Plan: Added an "int" custom field, verified it had integer semantics and indexed into the integer index.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7005
Implement standard field "bool" type

Summary: Depends on D7005. Implements the existing "bool" type.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7006
Implement a "select" standard custom field type

Summary: See D7006, etc. Brings this from Maniphest.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7007
Implement a "remarkup" standard field type

Summary: See D7006, etc. This one's easy since exposing it to ApplicationSearch doesn't make much sense.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7008
Add a "date" standard custom field

Summary: See previous revisions. As maniphest.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7009
Add "user" and "users" standard custom fields

Summary: These end up a little weird with subclassing instead of `switch`, but some day we could alias them to one another or something I guess. If I'm feeling brave, I might get rid of the "user" variant when I migrate Maniphest custom field specs, and turn it into "users, limit = 1" or something like that.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7010
Make ManiphestCustomField actually implement the interface it ostensibly exposes

Summary: There's a bunch of stuff that lives only in AuxiliaryField which is called on objects which may be ManiphestCustomFields right now. This is basically a list of remaining API methods which need to be moved to the new stuff. This enables construction of new-style custom fields.

Test Plan: Created a sophisticated Maniphest custom field.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7013
Policy, Status in PHUIHeaderView

Summary: The adds the ability to set 'properties' such as state, privacy, due date to the header of objects.

Test Plan: Implemented in Paste, Pholio. Tested various states.

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D7016
Make user and project profile links into Maniphest show only open tasks

Summary:
A couple of things here:

  - These links got fixed, but they show all user or project tasks. They should show only open ones.
  - Add an anchor so we jump you straight to the results, since the query UI is like a thousand miles tall now. We might take some other approaches here too, but let's see if this feels reasonable.

Test Plan: Clicked "View Tasks" from Profile and Projects. Executed some queries.

Reviewers: btrahan

Reviewed By: btrahan

CC: euresti, aran, chad

Differential Revision: https://secure.phabricator.com/D7014
Fix excel export of builtin queries

Summary: This works fine for custom queries, but not for builtins.

Test Plan: Exported a builtin query.

Reviewers: btrahan

Reviewed By: btrahan

CC: hach-que, aran

Differential Revision: https://secure.phabricator.com/D7015
Restore "Unbreak Now" and "Needs Triage" homepage boxes as cusomizable elements

Summary: Ref T3583. Fixes T3835. Dropbox and Disqus both want these things back, so restore them until we can do something about T3583.

Test Plan: Viewed homepage, clicked "View All X" buttons.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3583, T3835

Differential Revision: https://secure.phabricator.com/D7017
Add a differential.getdiffs method

Summary: I kind of made a mess of the API doing T2784. I figure just adding this is fine but LMK if you'd prefer something like diffquery got cleaned up more to handle this.  Also adds an idx() call as I was getting errors looking at old diffs. Fixes T3823.

Test Plan: used the new api via test console - great success.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T3823

Differential Revision: https://secure.phabricator.com/D6966
Add a "Header" standard custom field

Summary: Ref T418. This is the last of the Maniphest field types, although I have a few more capabilities/options to port over.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

CC: chad, aran

Maniphest Tasks: T418

Differential Revision: https://secure.phabricator.com/D7018