Initial version of ModHelper plugin, with basic functionality but the UI stripped out until it's easier to get it done.

* users need to have 'modhelper' role manually added via userrole.php for now
* modhelper users can sandbox/unsandbox and silence/unsilence any user
** note that no new logging has been added for these moderator actions
* no user deletion for modhelpers
* probably no UserFlags special views for modhelpers

plugins/ModHelper/ModHelperPlugin.php

@@ -0,0 +1,54 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+/**
+ * @package ModHelperPlugin
+ * @maintainer Brion Vibber <brion@status.net>
+ */
+class ModHelperPlugin extends Plugin
+{
+    function onPluginVersion(&$versions)
+    {
+        $versions[] = array('name' => 'ModHelper',
+                            'version' => STATUSNET_VERSION,
+                            'author' => 'Brion Vibber',
+                            'homepage' => 'http://status.net/wiki/Plugin:ModHelper',
+                            'rawdescription' =>
+                            _m('Lets users who have been manually marked as "modhelper"s silence accounts.'));
+
+        return true;
+    }
+
+    function onUserRightsCheck($profile, $right, &$result)
+    {
+        if ($right == Right::SILENCEUSER || $right == Right::SANDBOXUSER) {
+            // Hrm.... really we should confirm that the *other* user isn't privleged. :)
+            if ($profile->hasRole('modhelper')) {
+                $result = true;
+                return false;
+            }
+        }
+        return true;
+    }
+
+}