Okay I talked to the guy who is responsible yesterday and he said I could not do my bachelor thesis yet for formal reasons, I need to attend two more lectures for half a year. But he said that future projects (based on the Freenet-WoT-plugin :) would be okay as a bachelor thesis.
So when Freetalk is finished I can just implement some other WoT application as a bachelor thesis. - My work will continue normally now of course. No reason for less motivation :) xor