Interface responsiveness

[JHogenboom]

Problem description
When using the interface to describe data (variables, and their values) the responsiveness decreases as the list of items to describe or the list of available descriptions becomes very long.

With large datasets, or large schemas, this -practically- renders the interface useless.

Desired solution
Set both the list of items to describe (again, this can be variables or their values) and the list of available descriptions to a max (e.g. 20 variables at once). This change should then also allow the user to show the next 20 options, or to return to the previous 20.