Dev install tweaks

Clarify which directory "./manage.py" needs to be run in and how to
setup moderation in a test instance.

Author: df7cb

docs/dev_install.rst

@@ -34,7 +34,7 @@ with. Here's a quick step-by-step on how to do that:
    There are some parts of the site that require further settings, but
    this should be enough to get the basics up and running.
 
-#. In the pgweb directory run the following command to create all
+#. In the top directory run the following command to create all
    tables and indexes, as well as create a superuser for your local
    installation::
 

docs/django.rst

@@ -44,6 +44,9 @@ should set the send_notification attribute to True. This will cause
 the system to automatically send out notifications to the NOTIFICATION_EMAIL
 address whenever a new object is created or an existing one is modified.
 
+To test moderation, create a group "pgweb moderators" and add your user to it.
+The moderation URL is /admin/pending/.
+
 If the form contains any text fields that accept markdown, the
 attribute markdown_fields should be set to a tuple containing a list
 of these fields. This will cause the system to automatically generate