Implement 'Student projects' page

[keenanandrew]

In 'Get involved'.

• [ ] White Button list of (active) projects
• [ ] Explanation of process
• [ ] Documentation of how an approved project can end up on here

[keenanandrew]

Page upgraded with a groupinglist after brief discussion with ED.

More documentation and development is needed, but this issue is being closed for now as the minimum viable product has been deployed.