[FIX] point_of_sale: add multi-companies rules on pos.config
[MERGE] Forward-port of latest 7.0 bugfixes, up to rev. 9917 revid:dle@openerp.com-20140320154436-ygqhvvyhe6otv70p
[MERGE] Forward-port of latest saas-2 bugfixes, up to rev. 9156 revid:dle@openerp.com-20140320161003-j01cc6sqves2wnp2