Fix compatibility issue with Mysql migration
Fix compatibility issue with Mysql migration

stinnux/kanboard,Busfreak/kanboard,fguillot/kanboard,patoi/kanboard,oliviermaridat/kanboard,libin/kanboard,renothing/kanboard,BlueTeck/kanboard,oliviermaridat/kanboard,Busfreak/kanboard,patoi/kanboard,thylo/kanboard,thylo/kanboard,renothing/kanboard,patoi/kanboard,kanboard/kanboard,renothing/kanboard,filhocf/kanboard,filhocf/kanboard,filhocf/kanboard,oliviermaridat/kanboard,kanboard/kanboard,Busfreak/kanboard,fguillot/kanboard,BlueTeck/kanboard,fguillot/kanboard,BlueTeck/kanboard,libin/kanboard,thylo/kanboard,kanboard/kanboard,stinnux/kanboard,stinnux/kanboard