Fix an edge case when trying to pull duplicate refs via Doorkeeper

Summary:
Report from Asana. In some unclear circumstances, we my attempt to resolve duplicate refs which currently ends up hitting a duplicate key error.

Instead, reference the same external object if we happen to be handed duplicate refs.

Test Plan:
Used this script to reproduce the issue. Applied the fix; issue went away:

  #!/usr/bin/env php
  <?php

  require_once 'scripts/__init_script__.php';

  $args = new PhutilArgumentParser($argv);
  $args->parseStandardArguments();

  $ref = id(new DoorkeeperObjectRef())
    ->setApplicationType(DoorkeeperBridgeAsana::APPTYPE_ASANA)
    ->setApplicationDomain(DoorkeeperBridgeAsana::APPDOMAIN_ASANA)
    ->setObjectType(DoorkeeperBridgeAsana::OBJTYPE_TASK)
    ->setObjectID(7253737283629); // Use a new task ID which we've never pulled.

  $refs = array(clone $ref, clone $ref);

  $asana_user = id(new PhabricatorPeopleQuery())
    ->setViewer(PhabricatorUser::getOmnipotentUser())
    ->withUsernames(array('asana'))
    ->executeOne();

  $resolved_refs = id(new DoorkeeperImportEngine())
    ->setViewer($asana_user)
    ->setRefs($refs)
    ->execute();

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7709
Add a basic push log for recording repository push events

Summary:
Ref T4195. This log serves two purposes:

  - It's a log, so you can see what happened. Particularly, in Git/Hg, there is no other way to tell:
    - Who //pushed// a change (vs committed / authored)?
    - When was a change pushed?
    - What was the old value of some tag/branch before someone destroyed it?
  - We can hand these objects off to Herald to implement pre-commit rules.

This is a very basic implementation, but gets some data written and has a basic UI for it.

Test Plan: {F87339}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4195

Differential Revision: https://secure.phabricator.com/D7705
Store pusher remote address and push protocol in PushLog

Summary: Ref T4195. Stores remote address and protocol in the logs, where possible.

Test Plan: Pushed some stuff, looked at the log, saw data.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4195

Differential Revision: https://secure.phabricator.com/D7711
Allow repository push logs to be filtered by pusher and repository

Summary: Ref T4195. Add UI options to filter push logs by pusher and repository. Add a link from the repository view page to the push logs.

Test Plan: Viewed a hosted repository, clicked logs link, saw logs. Filtered lgos by repo/pusher.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4195

Differential Revision: https://secure.phabricator.com/D7713
Record new commits in the push log

Summary:
Ref T4195. Like the previous diffs, these both create a useful log and give us an object to hand off to Herald.

Surface this information in Diffusion, too, and clean things up a little bit.

Test Plan: {F87565}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4195

Differential Revision: https://secure.phabricator.com/D7718
Add "r <name>" to jump nav to locate repositories by name

Summary: User request.

Test Plan: Searched for `r ph`, `r poetry`.

Reviewers: btrahan, bigo

Reviewed By: bigo

CC: aran

Differential Revision: https://secure.phabricator.com/D7720
Add an SSH access log

Summary: Ref T4107. Ref T4189. This implements an SSH access log, similar to the HTTP access log.

Test Plan:
  [Thu, 05 Dec 2013 13:45:41 -0800]	77841	orbital	::1	dweller	epriestley	epriestley	git-receive-pack	/diffusion/POEMS/	0	324765	402	232
  [Thu, 05 Dec 2013 13:45:48 -0800]	77860	orbital	::1	dweller	epriestley	epriestley	git-receive-pack	/diffusion/POEMS/	0	325634	402	232

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4107, T4189

Differential Revision: https://secure.phabricator.com/D7719
Fix an error in the PolicyFilter algorithm

Summary:
`PhabricatorPolicyFilter` has a bug right now where it lets through objects incorrectly if:

  - the query requests two or more policies;
  - the object satisfies at least one of those policies; and
  - policy exceptions are not enabled.

This would be bad, but there's only one call in the codebase which satisfies all of these conditions, in the Maniphest batch editor. And it's moot anyway because edit operations get another policy check slightly later. So there is no policy/security impact from this flaw.

(The next diff relies on this behavior, which is how I caught it.)

Test Plan:
  - Added a failing unit test and made it pass.
  - Grepped the codebase for `requireCapabilities()` and verified that there is no security impact. Basically, 99% of callsites use `executeOne()`, which throws anyway and moots the filtering.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7721
Don't show client IP in push logs unless viewer can edit the repository

Summary: This locks push logs down a little bit and makes them slightly more administrative. Primarily, don't show IPs to googlebot, etc.

Test Plan: Viewed push logs as edit and non-edit users.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D7722
Minor, sort out a change request which was lost in the melee.
Implement "Upload Artifact" build step

Summary: This implements a build step for uploading an artifact from a build machine to Phabricator.  It uses SFTP so that it will work on both UNIX and Windows build machines.

Test Plan: Ran an "Upload Artifact" build against a Windows machine (with FreeSSHD installed).  The artifact uploaded to Phabricator, appeared on the build view and the file contents could be viewed from Phabricator.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Maniphest Tasks: T1049

Differential Revision: https://secure.phabricator.com/D7582
Implement explicit build step ordering in Harbormaster

Summary: This implements support for explicitly marking the sequence of build steps.  Users can now drag and re-order build steps in plans, and artifact dependencies are re-calculated so that if you move "Run Command" before "Lease Host", the "Run Command" step has it's artifact setting cleared and thus the step becomes invalid.

Test Plan: Re-ordered build steps and observed dependencies being correctly recalculated.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Maniphest Tasks: T1049

Differential Revision: https://secure.phabricator.com/D7715
Multicolor headers

Summary: This adds a handful of 'Main Header' colors to change the look of Phabricator very slightly. I know I would probably set my dev header to a different color.

Test Plan: Tested each css class and color, can add more in the future.

Reviewers: epriestley, btrahan

Reviewed By: btrahan

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7731
Merge branch 'master' of http://github.com/facebook/phabricator