microblog sending

- Bridge: added sendPersonalEvent to DBus frontend
- plugin XEP_0277: * fixed unicode issue
				   * node options are now changed instead of node being deleted/recreated for setMicroblogAccess
- xml_tools: fixed unicode issue

src/tools/xml_tools.py

@@ -324,5 +324,5 @@ class ElementParser(object):
         parser.DocumentEndEvent = onEnd
         tmp = domish.Element(("", "s"))
         tmp.addRawXml(s.replace('\n','').replace('\t',''))
-        parser.parse(tmp.toXml())
+        parser.parse(tmp.toXml().encode('utf-8'))
         return self.result.firstChildElement()