Show contact lists on the uploads page

Uploads page is where all the stuff you’ve uploaded lives. Now you can
upload contact lists they should live here too.

They always come first because they’re the most-removed from stuff
you’ve sent.

app/models/contact_list.py

@@ -27,6 +27,8 @@ class ContactList(JSONModel):
         'template_type',
     }
 
+    upload_type = 'contact_list'
+
     @classmethod
     def from_id(cls, contact_list_id, *, service_id):
         # This is temporary until we have a get single list endpoint