Add `bin/worker flood`, for flooding the task queue with work

Summary: Ref T6615. Ref T3554. We need better tooling around the queue eventually, so start here.

Test Plan: Added 100K+ tasks locally with `bin/worker flood`. Executed some of them with `bin/phd debug taskmaster` (we already have a TestWorker, used in unit tests).

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T3554, T6615

Differential Revision: https://secure.phabricator.com/D10894
Reverse meaning of task priority column

Summary:
Ref T6615. Mixing ASC and DESC ordering on a multipart key makes it dramatically less effective (or perhaps totally ineffective).

Reverse the meaning of the `priority` column so it goes in the same direction as the `id` column (both ascending, lower values execute sooner).

Test Plan:
  - Queued 1.2M tasks with `bin/worker flood`.
  - Processed ~1 task/second with `bin/phd debug taskmaster` before patch.
  - Applied patch, took ~5 seconds for ~1.2M rows.
  - Processed ~100-200 tasks/second with `bin/phd debug taskmaster` after patch.
  - "Next in Queue" query on daemon page dropped from 1.5s to <1ms.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: aklapper, 20after4, epriestley

Maniphest Tasks: T6615

Differential Revision: https://secure.phabricator.com/D10895
Clean up UITooltips

Summary: Fixes positioning issues by creating another container to hold the abs. positioned arrows. (Issues primarily presented on Workboards).

Test Plan: Test UI arrows on a workboard, applciation launcher, and in UIExamples.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D10897
Expose transaction PHID in maniphest.gettasktransactions

Summary: Fixes T6629.

Test Plan: {F238271}

Reviewers: btrahan, chad, 20after4

Reviewed By: 20after4

Subscribers: 20after4, epriestley

Maniphest Tasks: T6629

Differential Revision: https://secure.phabricator.com/D10898
Don't show meme Remarkup hint button if Macro application is not usable

Summary: See <https://phabricator.wikimedia.org/T906>. This behavior is a bug; we should remove the button if the user can't use the application.

Test Plan:
- With Macro uninstalled, did these things verifying the button vanished:
  - Sent a user a message.
  - Edited a revision.
  - Edited repository basic information.
  - Edited an initiative.
  - Edited a Harbormaster build step.
  - Added task comments.
  - Edited profile blurb.
  - Edited blog description.
  - Commented on Pholio mock.
  - Uploaded Pholio image.
  - Edited Phortune merchant.
  - Edited Phriction document.
  - Edited Ponder answer.
  - Edited Ponder question.
  - Edited Slowvote poll.
  - Edited a comment.
- Reinstalled Macro and saw button come back.
- Used button to put silly text on a funny picture.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D10900
Fix inline project list on Chrome 39

Summary: T6622, changes the list to be inline instead of inline block.

Test Plan:
Tested Chrome/Win, Chrome/Mac, FF/Win, Safari/Mac, IE/Win

{F238296}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D10901
Remove inner spacing on mozilla-based buttons

Summary: Fixes T6644

Test Plan:
Tested buttons in FF and Chrome

Before:
{F238749}

After:
{F238748}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6644

Differential Revision: https://secure.phabricator.com/D10903
Fixed typo in Phame user guide

Summary: adminstrator → administrator

Test Plan: read again the sencence

Reviewers: btrahan, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D10904
Merge branch 'master' of github.com:phacility/phabricator

* 'master' of github.com:phacility/phabricator:
  Fixed typo in Phame user guide
  Remove inner spacing on mozilla-based buttons
  Fix inline project list on Chrome 39
  Don't show meme Remarkup hint button if Macro application is not usable
  Expose transaction PHID in maniphest.gettasktransactions
  Clean up UITooltips
  Reverse meaning of task priority column
  Add `bin/worker flood`, for flooding the task queue with work