Show only 'session' and 'other' type meetings on the materials page, especially do not show leadership meetings.

 - Legacy-Id: 11695

Author: levkowetz

ietf/meeting/views.py

@@ -101,7 +101,7 @@ def materials(request, num=None):
     plenaries = sessions.filter(name__icontains='plenary')
     ietf      = sessions.filter(group__parent__type__slug = 'area').exclude(group__acronym='edu')
     irtf      = sessions.filter(group__parent__acronym = 'irtf')
-    training  = sessions.filter(group__acronym__in=['edu','iaoc'])
+    training  = sessions.filter(group__acronym__in=['edu','iaoc'], type_id__in=['session', 'other', ])
     iab       = sessions.filter(group__parent__acronym = 'iab')
 
     cache_version = Document.objects.filter(session__meeting__number=meeting.number).aggregate(Max('time'))["time__max"]