Move column hide/show to the column context menu on workboards

Summary: Fixes T5993. Now that we have a context menu we can make some edit operations easier to access.

Test Plan: Toggled column visibility. Verified board state (columns shown/hidden, ordering) was retained.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5993

Differential Revision: https://secure.phabricator.com/D10417

src/applications/project/application/PhabricatorProjectApplication.php

@@ -67,8 +67,8 @@ final class PhabricatorProjectApplication extends PhabricatorApplication {
         'board/(?P<projectID>[1-9]\d*)/' => array(
           'edit/(?:(?P<id>\d+)/)?'
             => 'PhabricatorProjectColumnEditController',
-          'delete/(?:(?P<id>\d+)/)?'
-            => 'PhabricatorProjectBoardDeleteController',
+          'hide/(?:(?P<id>\d+)/)?'
+            => 'PhabricatorProjectColumnHideController',
           'column/(?:(?P<id>\d+)/)?'
             => 'PhabricatorProjectColumnDetailController',
           'import/'