Add script to import old member signup counts

apiserver/import_signup_counts.py

@@ -0,0 +1,22 @@
+# Expects a old_counts.csv of the historical counts in format:
+# month,signup_count
+# month in YYYY-MM format
+
+import django, sys, os
+os.environ['DJANGO_SETTINGS_MODULE'] = 'apiserver.settings'
+django.setup()
+
+import csv
+from apiserver.api import models
+
+with open('old_counts.csv', newline='') as csvfile:
+    reader = csv.DictReader(csvfile)
+    for row in reader:
+        print('Adding', row['month'], row['signup_count'])
+
+        models.StatsMemberSignup.objects.update_or_create(
+            month=row['month']+'-01',
+            defaults=dict(signup_count=row['signup_count']),
+        )
+
+print('Done.')