Setting for your most recent edits (#3483)

Closes #996

docs/advanced_topics/settings.rst

@@ -230,6 +230,16 @@ To use Embedly, you must also install their Python module:
   $ pip install embedly
 
 
+Dashboard
+---------
+
+.. code-block:: python
+
+    WAGTAILADMIN_RECENT_EDITS_LIMIT = 5
+
+This setting lets you change the number of items shown at 'Your most recent edits' on the dashboard.
+
+
 Images
 ------
 

wagtail/wagtailadmin/views/home.py

@@ -56,7 +56,7 @@ class RecentEditsPanel(object):
                     SELECT max(created_at) AS max_created_at, page_id FROM
                         wagtailcore_pagerevision WHERE user_id = %s GROUP BY page_id ORDER BY max_created_at DESC LIMIT %s
                 ) AS max_rev ON max_rev.max_created_at = wp.created_at ORDER BY wp.created_at DESC
-             """, [self.request.user.pk, 5])
+             """, [self.request.user.pk, getattr(settings, 'WAGTAILADMIN_RECENT_EDITS_LIMIT', 5)])
         last_edits = list(last_edits)
         page_keys = [pr.page.pk for pr in last_edits]
         specific_pages = Page.objects.filter(pk__in=page_keys).specific()