[FIX] Add related field in sponsor model to allow public user to get logo from res partner without give all the rights.
[FIX] website_blog: typo, platform instead of plateform
[MERGE] Forward-port of latest saas-3 bugfixes, up to rev. 9347 revid:dle@openerp.com-20140324162524-ew3c3eauj3kcnefi