[IMP] small improvement to default field manager
[IMP] small improvement to default field manager

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