[FIX] mail: to/from/reply-to addresses formated according to RFC2822

Use formataddr method from email.utils lib, which do the job correctly
[FIX] portal_claim: create claim with no partner_id

If partner_id is False, do not try to name_get

This fix is related to the rev 095be21ab17f7f731877d61c99b48b51119ff39a
Merge branch '7.0' of https://github.com/odoo/odoo into 7.0-win32