You can find the full source code for this website in the Seam package in the directory /examples/wiki. It is licensed under the LGPL.
Simple but helpful for me.
For those of you who use seam-gen and mysql. If you want to build your import data based off the interactions you made to your app. You can take a snapshot of your database with the following command:
mysqldump -u <username> -p<password> -e -c -t --compact <databasename> > <path-to-project>/resources/import-dev.sql
and the state of the database will be used next time restart. ;)