add site to user creating admin so users can no longer be created without sites
diff --git a/planetstack/core/admin.py b/planetstack/core/admin.py
index e4af7f8..365c0dc 100644
--- a/planetstack/core/admin.py
+++ b/planetstack/core/admin.py
@@ -1249,7 +1249,7 @@
     add_fieldsets = (
         (None, {
             'classes': ('wide',),
-            'fields': ('email', 'firstname', 'lastname', 'is_readonly', 'phone', 'public_key','password1', 'password2')},
+            'fields': ('site', 'email', 'firstname', 'lastname', 'is_readonly', 'phone', 'public_key','password1', 'password2')},
         ),
     )
     readonly_fields = ('backend_status_text', )