[FIX] im_livechat : add access rules for livechat report
[IMP] im_livechat : add ir.actions.to_do to redirect to the channel page after module installation
[FIX] im_livechat : repair style and change bundle for website_livechat
[IMP] im_chat : add smiley shortcode in im_chat data
[FIX] bus : make it more fluent. Put the cr.commit() at the right place.
[IMP] im_chat : add the quit conversation option
[FIX] im_livechat : feedback only if the session is not empty (there is messages)