Install source

svn co https://socialtext.svn.sourceforge.net/svnroot/socialtext
cd socialtext
./configure --hostname saturn.ffzg.hr --server-admin dpavlin@rot13.org --support-address mglavica@ffzg.hr
make

Add new admin user

sudo -u www-data st-admin create-user --email dpavlin@rot13.org --password wikidream --first-name Dobrica --last-name Pavlinusic
sudo -u www-data st-admin add-workspace-admin --email dpavlin@rot13.org