Merged in [13900] from peter@akayla.com:

    Allows ADs to manage meeting materials from the meeting/##/materials page. Fixes ietf-tools#2213.
 - Legacy-Id: 13906
Note: SVN reference [13900] has been migrated to Git commit 0d2e3cd

Author: levkowetz

ietf/group/utils.py

@@ -121,7 +121,7 @@ def milestone_reviewer_for_group_type(group_type):
         return "Area Director"
 
 def can_manage_materials(user, group):
-    return has_role(user, 'Secretariat') or group.has_role(user, ("chair", "delegate", "secr", "matman"))
+    return has_role(user, 'Secretariat') or group.has_role(user, ("chair", "delegate", "secr", "matman", "ad"))
 
 def can_provide_status_update(user, group):
     if not group.type_id in ['wg','rg','ag','team']: