Refactor/filter refactor

[Abekomon]

What does this merge do? Check all that apply.

• [x] Adds a new feature
• [x] Improves an existing feature
• [x] Fixes a bug
• [ ] Cleans up (logs, tests, etc.)

How has this been tested?

User tested

Description:

Updates Form filtering system to use Marketplace routing + URL Update links to fit new URL layout Update NavLinks to use isActive for more robust coverage Minor styling updates

Issues:

Currently the Form pushes the URL into history twice, so if you want to go back a page, you have to press back twice.

Where to find Changes:

Files: /src/Components/App/App.js + /Form/Form.js + /Marketplace/Marketplace.js

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have used tests to prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my change