Merge pull request #350 from comphilip/release

Fix "'NoneType' object has no attribute 'lower'" when no AUTH_LDAP_MI…

Author: cimnine

configuration/ldap/ldap_config.py

@@ -71,7 +71,7 @@ def _import_group_type(group_type_name):
 
 # For more granular permissions, we can map LDAP groups to Django groups.
 AUTH_LDAP_FIND_GROUP_PERMS = environ.get('AUTH_LDAP_FIND_GROUP_PERMS', 'True').lower() == 'true'
-AUTH_LDAP_MIRROR_GROUPS = environ.get('AUTH_LDAP_MIRROR_GROUPS', None).lower() == 'true'
+AUTH_LDAP_MIRROR_GROUPS = environ.get('AUTH_LDAP_MIRROR_GROUPS', '').lower() == 'true'
 
 # Cache groups for one hour to reduce LDAP traffic
 AUTH_LDAP_CACHE_TIMEOUT = int(environ.get('AUTH_LDAP_CACHE_TIMEOUT', 3600))