Remove old classes before adding new ones. Updates #38
Merge branch '0.6.x' of git://github.com/w3host/converse.js into w3host-0.6.x
Update CHANGES.rst
Merge branch 'master' of git://github.com/bkocherov/converse.js into bkocherov-master

Conflicts:
	locale/locales.js

Conflicts:
	index.html

Add Russian translation by bkocherov (actually made against master branch)
Add setting to enable/disable MUC
Don't use id for controlbox panes
Fix tests that were broken after vCard changes

Conflicts:
	tests_main.js
Add config option ``allow_contact_requests`` to toggle user adding
2 Bugfixes.

- Register handlers that depend on the roster inside initRoster and the
  message handler inside chatboxes.onConnected. This solves problem of presence
  stanzas being received before handlers are initialized. Updates #65

- Check if MUC is allowed during feature discovery
Remove duplicate allow_muc and sort