** Added description into Illusion group description view
** Added initial view for Illusion group chat messages
** Fixed join event firing in illusion group chat
** Changed Illusion group chats to be nonanonymous
** Added avatars into Illusion group chats
** Added new system setting key CHAT_BOT_JID
** Changed Illusion group creation view to invite chat bot to muc room
** Added locale configuration of muc room into Illusion group creation
** Changed Illusion group view to fire an event when chat participant
joins