new permissions:

* list members may be nominated as moderators by admin
* admin may allow moderators to nominate more moderators
* admin may set allowed senders to one of the following:
    * owners and mods
    * all subscribers
    * everyone
* moderators are now able to remove members from list

static/templates/inspect.st

@@ -49,11 +49,15 @@
                     </label>
                 </fieldset>
                 <fieldset>
-                    <legend>Archive options</legend>
+                    <legend>Other options</legend>
                     <label>
                         <input type="checkbox" name="archive">
                         Collect messages in public archive
                     </label>
+                    <label>
+                        <input type="checkbox" name="edit_mods">
+                        Moderators may edit list of moderators
+                    </label>
                 </fieldset>
                 <button type="submit">Save</button>
             </fieldset>