[IMP] move domain section and label to ExtendedSearchProposition.Field
[IMP] move domain section and label to ExtendedSearchProposition.Field

Simplifies and linearizes control flow
MarkusTeufelberger/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,splbio/openerp-web,gisce/openerp-web,splbio/openerp-web,gisce/openerp-web