doorUpdater: Sort MembershipWorks CSV by last name

so that output CSVs might be more consistent

doorUpdater.py

@@ -113,6 +113,7 @@ def main():
     data = getMembershipworksData()
     reader = csv.DictReader(StringIO(data))
     members = list(reader)
+    members.sort(key=lambda x: x['Last Name'])
 
     if os.path.exists('/tmp/doorUpdaterLastHash'):
         with open('/tmp/doorUpdaterLastHash', 'r') as f: