Stop nuking the database on every startup

- this should only occur if we rebuild

startup.sh

@@ -6,7 +6,7 @@ until nc -z db 3306; do
 done
 
 export GO_SECRET_KEY=$(dd if=/dev/urandom count=100 | tr -dc "A-Za-z0-9" | fold -w 60 | head -n1 2>/dev/null)
-python go/manage.py flush --no-input
+# python go/manage.py flush --no-input
 python go/manage.py makemigrations
 python go/manage.py makemigrations go
 python go/manage.py migrate