Simplified General Project Settings

Description

As part of simplifying settings we want to improve the usability of the general settings page page.

Proposal

Use the same approach for collapsing items as we have for Repository settings where sections can be expanded or collapsed.

Links / references

Documentation blurb

(Write the start of the documentation of this feature here, include:

1. Why should someone use it; what's the underlying problem.
2. What is the solution.
3. How does someone use this

During implementation, this can then be copied and used as a starter for the documentation.)