[FIX] Make kanban view tolerant to simultaneous do_search calls
[FIX] Make kanban view tolerant to simultaneous do_search calls

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