/algorithm status code 303 is not API-compliant

The service at /algorithm returns a 303 if the client does not provide an authorisation token. This is not compliant to the [OpenTox API v1.2](http://opentox.org/dev/apis/api-1.2/Algorithm). I think the best option is that /algorithm always returns a list of all algorithm URIs and does not require user authentication.

This raises the need for a web-based user interface that is perfectly separated from the services. We should also consider removing the HTML support form JAQPOT at a certain point.