[FIX] attachments not correctly decoded (from b64) before sending to the client
[FIX] attachments not correctly decoded (from b64) before sending to the client

havt/openerp-web,havt/openerp-web,akretion/openerp-web,havt/openerp-web,havt/openerp-web,havt/openerp-web,akretion/openerp-web,akretion/openerp-web