Allow workboards to be filtered with ApplicationSearch

Summary:
Ref T4673.

IMPORTANT: I had to break one thing (see TODO) to get this working. Not sure how you want to deal with that. I might be able to put the element //inside// the workboard, or I could write some JS. But I figured I'd get feedback first.

General areas for improvement:

  - It would be nice to give you some feedback that you have a filter applied.
  - It would be nice to let you save and quickly select common filters.
  - These would probably both be covered by a dropdown menu instead of a button, but that's more JS than I want to sign up for right now.
  - Managing custom filters is also a significant amount of extra UI to build.
  - Also, maybe these filters should be sticky per-board? Or across all boards? Or have a "make this my default view"? I tend to dislike implicit stickiness.

Test Plan:
Before:

{F157543}

Apply Filter:

{F157544}

Filtered:

{F157545}

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: qgil, swisspol, epriestley

Maniphest Tasks: T4673

Differential Revision: https://secure.phabricator.com/D9211

resources/celerity/map.php

@@ -407,6 +407,7 @@ return array(
     'rsrc/js/application/policy/behavior-policy-control.js' => '71b4cbcc',
     'rsrc/js/application/policy/behavior-policy-rule-editor.js' => '263aeb8c',
     'rsrc/js/application/ponder/behavior-votebox.js' => '327dbe61',
+    'rsrc/js/application/projects/behavior-boards-filter.js' => '22f113af',
     'rsrc/js/application/projects/behavior-project-boards.js' => 'd8e135db',
     'rsrc/js/application/projects/behavior-project-create.js' => '065227cc',
     'rsrc/js/application/releeph/releeph-preview-branch.js' => '9eb2cedb',
@@ -544,6 +545,7 @@ return array(
     'javelin-behavior-audio-source' => '59b251eb',
     'javelin-behavior-audit-preview' => 'be81801d',
     'javelin-behavior-balanced-payment-form' => '3b3e1664',
+    'javelin-behavior-boards-filter' => '22f113af',
     'javelin-behavior-config-reorder-fields' => '938aed89',
     'javelin-behavior-conpherence-menu' => '7ee23816',
     'javelin-behavior-conpherence-pontificate' => '53f6f2dd',
@@ -1004,6 +1006,13 @@ return array(
       5 => 'javelin-json',
       6 => 'phabricator-prefab',
     ),
+    '22f113af' =>
+    array(
+      0 => 'javelin-behavior',
+      1 => 'javelin-dom',
+      2 => 'javelin-stratcom',
+      3 => 'phuix-dropdown-menu',
+    ),
     '263aeb8c' =>
     array(
       0 => 'javelin-behavior',