Diffusion - fix another commit importing case.

Summary: Fixes T6395. Ref T6350. I guess I missed this code spot in prior testing / I definitely didn't run an empty commit through it. Works now though.

Test Plan: made an empty commit and observed stuck importing status and errors in phd log. applied patch and commit successfully imported with no errors. made another empty commit and it imported as well

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6350, T6395

Differential Revision: https://secure.phabricator.com/D10746
Projects - re-label "Workboards" as "Workboard"

Summary: better aligns user expectations with product reality. Fixes T6391.

Test Plan: viewed a project and saw "workboard". viewed some project search results in /project and saw "workboard".

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6391

Differential Revision: https://secure.phabricator.com/D10747
MetaMTA - make test mail implementation support message id headers by default

Summary: Fixes T6372. Apparently ye olde error logs get some crazy spam action as is... Looking around at call sites, we do not specify $config (which could specify the supportage of message id header) so it seems correct to default this to something. I went with "true" as the spot we use this seems like pretty easy stuff that will always work.

Test Plan: lots of thinking

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6372

Differential Revision: https://secure.phabricator.com/D10749
Support mentions from dashboard panels

Summary: Fixes T6394. See that task for a description. See T6403 for a proposed long-term fix.

Test Plan: Mentioned a task from a dashboard panel.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6394

Differential Revision: https://secure.phabricator.com/D10750
Allow standard custom fields to be indexed in global fulltext search

Summary: Fixes T6399. This allows you to use global search to find projects by searching for text in their descriptions.

Test Plan: Added a unique word to a project description, reindexed it, searched, got a hit.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6399

Differential Revision: https://secure.phabricator.com/D10748
Add AlmanacBinding, to bind a service to an interface

Summary: Ref T5833. Allows you to bind a service (like `db.example.com`) to one or more interfaces (for example, to specify a pool with one read/write host and two read-only hosts). You can't configure which hosts have which properties yet, but you can add all the relevant interfaces to the service. Next diff will start supporting service, binding, and device properties like "is writable", "is active", etc., so that Almanac will be able to express operations like "change which database is writable", "disable writes", "bring a device down", etc.

Test Plan: See screenshots.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5833

Differential Revision: https://secure.phabricator.com/D10745
Fix project hashtag regexp to stop matching terminal periods

Summary:
Fixes T6416. The comment is consistent with intent, but the actual regexp doesn't quite work right. In particular, we incorrectly match `#security.` as `security.` (with a period) instead of `security` (with no period).

Since this stuff is a pain to test and I evidently got it wrong in this case in D8703, make it unit testable.

Test Plan:
Added unit tests. Also:

{F227181}

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6416

Differential Revision: https://secure.phabricator.com/D10753
Diffusion - upgrade exception error message to include hint to config option

Summary: Fixes T6419. Also, there was a question on T6419 about whether this was in a try catch block and it is... Its not clear to me what happens in the "timeout" case though?

Test Plan: looks nice

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6419

Differential Revision: https://secure.phabricator.com/D10755
Fixed MediaWiki logo in login sprite sheets.

Summary:
I've been advised that that the MediaWiki flower needs to
appear with the square brackets for proper MediaWiki trademark
presentation.

See https://phabricator.wikimedia.org/T543 for relevant discussion.

Test Plan:
view login page with MediaWiki oauth plugin enabled,
 see that the logo includes square brackets around the flower

Reviewers: epriestley, qgil, #blessed_reviewers, chad

Reviewed By: #blessed_reviewers, chad

Subscribers: Korvin, epriestley

Projects: #auth, #wikimedia

Differential Revision: https://secure.phabricator.com/D10752
Fix various MySQL version issues with new charset stuff

Summary:
Ref T1191. Notable stuff:

  - Adds `--disable-utf8mb4` to `bin/storage` to make it easier to test what things will (approximately) do on old MySQL. This isn't 100% perfect but should catch all the major stuff. It basically makes us pretend the server is an old server.
  - Require utf8mb4 to dump a quickstart.
  - Fix some issues with quickstart generation, notably special casing the FULLTEXT handling.
  - Add an `--unsafe` flag to `bin/storage adjust` to let it truncate data to fix schemata.
  - Fix some old patches which don't work if the default table charset is utf8mb4.

Test Plan:
  - Dumped a quickstart.
  - Loaded the quickstart with utf8mb4.
  - Loaded the quickstart with `--disable-utf8mb4` (verified that we get binary columns, etc).
  - Adjusted schema with `--disable-utf8mb4` (got a long adjustment with binary columns, some truncation stuff with weird edge case test data).
  - Adjusted schema with `--disable-utf8mb4 --unsafe` (got truncations and clean adjust).
  - Adjusted schema back without `--disable-utf8mb4` (got a long adjustment with utf8mb4 columns, some invalid data on truncated utf8).
  - Adjusted schema without `--disable-utf8mb4`, but with `--unsafe` (got truncations on the invalid data).

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T1191

Differential Revision: https://secure.phabricator.com/D10757