It was a bug report before (#42), but actually it is a feature request:
Last week I attended to the summer school in Budapest and I had the chance to use the installation wizard. There are two things that I believe would improve it. After talking to Akos, he told me to submit an issue, so here it is:
Provide a way to specify the tomcat port on which the front- and backend are running. Sometimes, due to firewall limitations or pre-existing services, one needs to install gUse in a different port than 8080.
Same as ( 1 ), but for mysql.