I have decided after arguing this through with the DV people is that they want a Joomla! or php-based website so they get a nice GUI and can edit it themselves. And no Java. So I have to rewrite nmerge in C++ and develop a Joomla! plugin out of the Alpha wiki web application. This way other humanitites users can get a simple, easy to deploy, web-application without paying for expensive web-hosting.