Workboards - let users delete columns

Summary: Fixes T4408. I had to add a "status" to colum. I think we'll need this once we get fancier anyway but for now we have "active" and deleted.

Test Plan: deleted a column. noted reloaded workboard with all those tasks back in the default colun. loaded a task and saw the initial transaction had a "Disabled" icon next to the deleted workboard. also saw the new transaction back to the default column worked.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T4408

Differential Revision: https://secure.phabricator.com/D8544

src/applications/project/application/PhabricatorApplicationProject.php

@@ -53,6 +53,8 @@ final class PhabricatorApplicationProject extends PhabricatorApplication {
         'move/(?P<id>[1-9]\d*)/' => 'PhabricatorProjectMoveController',
         'board/(?P<projectID>[1-9]\d*)/edit/(?:(?P<id>\d+)/)?'
           => 'PhabricatorProjectBoardEditController',
+        'board/(?P<projectID>[1-9]\d*)/delete/(?:(?P<id>\d+)/)?'
+          => 'PhabricatorProjectBoardDeleteController',
         'update/(?P<id>[1-9]\d*)/(?P<action>[^/]+)/'
           => 'PhabricatorProjectUpdateController',
         'history/(?P<id>[1-9]\d*)/' => 'PhabricatorProjectHistoryController',