LIBILS-45. Added support for application/x-www-form-urlencoded POSTs to the report submission endpoint.

- Added a parse_request() function that returns a hashref of the POSTed data, suitable to pass to the AlephRx object model.
- Added support for form parameter POSTs (application/x-www-form-urlencoded).
- Added a dummy.txt sample form data file, for use in testing the endpoint in development.
- Updated API and development VM documentation.