Features come and features go...

Features come and features go...
- the Buffer object is stripped down as possible but still exists in
as a Hash in the Client. This will be changed once the Auth Process is
redone.
- the client lib no longer depends on QtGui \o/
- channel activities are no longer shown (will be fixed soon) :(
- networks and channels are now once again greyed out when not in use \o/
- basic tabcompletion works again \o/