feat: add link to Selv demo

[daniel-mader]

Description of change

Adds a link to the Selv demo and adjusts how the links are presented.

Links to any relevant issues

n/a

How the change has been tested

n/a

Definition of Done checklist

Add an x to the boxes that are relevant to your changes.

• [x] I have followed the contribution guidelines for this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

[daniel-mader]

[SoulaAndrikopoulos]

Styling looks good in both dark mode and light mode. We just have to make sure to test this with demo users, and see if users will understand that the links are not clickable. 👍