[FIX] mail: followers widget was broken

This was probably due to 35f5fb46e78aef1feda4d9cfddd93bd356bdca28.
[FIX] GeoIP - allow to specify the path to GeoIP in the server config.

--geoip_db='the_path'  which can be used via openerp.tool.config['geoip_database']
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-win32