[MERGE] [FIX] export: allow excluding special virtual fields from exportable data
[MERGE] [FIX] export: allow excluding special virtual fields from exportable data

For example the virtual 'Access Rights' fields on
res.users cannot be browsed and cannot currently
by exported.
MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,splbio/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web