Allow for the Roadmap screen to expand and take up the full page width

The roadmap screen starts hiding the 4th column on a standard 1920x1080 monitor which means even with just "Open, Planned, In Progress and Complete" the Complete column is half cut off as Quackback won't take up the full width of the page.

This is even more annoying if you have a Closed column too as most users will never scroll to the right to see it.