added pubsub state stanzas and scheduled events

conn_tests/test_pubsubserver.py

@@ -5,7 +5,6 @@ from xml.etree import cElementTree as ET
 import os
 import time
 import sys
-import thread
 import unittest
 import sleekxmpp.plugins.xep_0004
 from sleekxmpp.xmlstream.matcher.stanzapath import StanzaPath