Add merge migrations for parks, companies, and moderation apps; update EmailConfiguration, Review, Photo, TopList, and TopListItem models to use pghistory for historical tracking

email_service/models.py

@@ -1,7 +1,10 @@
 from django.db import models
 from django.contrib.sites.models import Site
+from history_tracking.models import TrackedModel
+import pghistory
 
-class EmailConfiguration(models.Model):
+@pghistory.track()
+class EmailConfiguration(TrackedModel):
     api_key = models.CharField(max_length=255)
     from_email = models.EmailField()
     from_name = models.CharField(max_length=255, help_text="The name that will appear in the From field of emails")