Scrollable relation menu

[ENAnr0]

New feature motivation

I'm almost sure that more than 80% of our customers are on Windows and using mouse. The way it works today is you need to move the mouse pointer right out to the right corner and click on the narrow to see the other relation fields, alternatively you can hold down the SHIFT key on the keyboard and use the scrolling wheel on the mouse what activate the horisontal scrolling. It should be more useable to make the whole card fields element horizontally scrollable when you have the mouse pointer on that area. (So you don't have to hold down the SHIFT key all the time).

New feature description

I'm not sure about the technical terms but I hade been seen and used this kind of solutions.

New feature implementation