Fix: uwsgi process is forking off
Cleanup linking the python binaries and lib directory
Fix: buildout vars "etc-directory" and "var-directory" do not exists
Removed buildout options domains.main and ports.main

Its better to use the domains/ports parts only for server hosts/ports
settings and the adhocracy part for adhocracy configuration:

* adhocracy.host is now domains.wsgi
* port.main is now ports.wsgi
* domains.main is no adhocracy.domain