[FIX] content-type of JSON-RPC2 responses
[FIX] content-type of JSON-RPC2 responses

--HG--
extra : convert_revision : xmo%40openerp.com-20110317155914-o3kft451y43zxzj7

MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,vnc-biz/openerp-web,vnc-biz/openerp-web,splbio/openerp-web,splbio/openerp-web,vnc-biz/openerp-web,gisce/openerp-web,gisce/openerp-web,vnc-biz/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,gisce/openerp-web