[ADD] Added Dataset#call_button for form's buttons triggering action that should be cleaned
[ADD] Added Dataset#call_button for form's buttons triggering action that should be cleaned

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