pProRep demo installation

In order to demonstrate the pProRep features, a demo installation is now accessible. This can be viewed without authetication. All data import/update/delete features as well as the user_admin module are disabled, but at other levels this is a fully functional version.

The data shown in this installation is equivalent to the Sample Dataset that can be downloaded from this website.

The demo instance can be accessed online at http://www.pdata.ua.ac.be/pProRep/demo/.