Resolve complexity in validation.js

[phavekes]

This issue is imported from pivotal - Originaly created at May 31, 2018 by Michiel Kodde

The client side validation config (validation.js) has grown more and more into a difficult to maintain script.

Action could be taken to solve this. Some of our initial thoughts are:

• Break the problem into smaller bits, make it more OO. For example utilize TypeScript.
• Use a front end framework (like angular) to capture the complexity in a framework that solves this problem.

Both options are less than optimal and the problem might not yet be big enough yet to need a solution..