Look at other services only if no templates

This saves one call to the API or Redis in the common case where the
current service does have templates.

This is because `any()` evaluates all expressions before running,
whereas `or` will only evaluate the second expression if the first
returns `False`-y.

app/main/views/templates.py

@@ -258,10 +258,10 @@ def add_template_by_type(service_id, template_folder_id=None):
 
     form = ChooseTemplateType(
         include_letters=current_service.has_permission('letter'),
-        include_copy=any((
-            len(current_service.all_templates) > 0,
-            len(user_api_client.get_service_ids_for_user(current_user)) > 1,
-        )),
+        include_copy=(
+            current_service.all_templates or
+            len(user_api_client.get_service_ids_for_user(current_user)) > 1
+        ),
         include_folder=current_service.has_permission('edit_folders')
     )