[ADD] Add support for custom arguments in buttons
[ADD] Add support for custom arguments in buttons

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