[crowdfunding] Kanban board

[apcloic]

Hi,

Would be really nice to have kanban board next to gantt.
#9028
#10894

As @bpabiszczak wrote in the following comment, the estimated cost is 1500€
#9028 (comment)

I can contribute with 100€.
Anyone interested in crowdfunding this feature ?

[acsinsurancegroup]

@apcloic I'm down to assist with crowd funding. We need more to jump on board with this idea.