To ease the marketing and lead follow up, a stat button about livechat sessions of the lead (that comes from the website_visitor model) is added to the crm.lead form view. This button displays and redirect to a list of all the sessions from all the visitors related to the lead. Task ID : 2057428 PR #36180 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>