[IMP] Do not link to openerp.screen when unecessary
[IMP] Do not link to openerp.screen when unecessary

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