[FIX] im_chat, im_livechat : fix the loading history for anonymous user and remove useless search_user_status rpc call.
[ADD] im_odoo_support : add the module for the live odoo support from all instances. This sets the bus and im_chat module auto installable.
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-win32