[IMP] add a class to factorize view manager layout
[IMP] add a class to factorize view manager layout
splbio/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,gisce/openerp-web,MarkusTeufelberger/openerp-web,splbio/openerp-web,gisce/openerp-web,splbio/openerp-web,MarkusTeufelberger/openerp-web