odoo/odoo — pull request #2886 by shingonoide (2014-10-03 11:04:03+00:00)
Title: Fix to hide kanban_groups when there's no record.

Hide kanban_groups or columns when there's no record to show.
I know this create a problem in time to create a new column, but I think
this is better.

The PR try to fixes the #2884