Export external number on "deliver" callback.

- Changed Order#do_callback to using a hash for passing in
  URL parameters.
- Updated "status=confirm" related stuff to report back the external number to
  the system that requested the order.
- Added Vim .swp-files to .gitignore
Remove unneeded braces
Removed test stuff from development conf.

- Removed test stuff from development conf that were causing
  errors when running in development mode