Enhancement: Mobile view for home page, interview rooms, and viewing past saves

[adarshm11]

Motivation

Our interviewers are often busy. In the case that they need to conduct an interview while they are away from their computers, a user-friendly mobile UI is a must. The previous mobile UI was not customized, jamming all of the regular components into a tiny phone screen.

Changes

• The homepage mobile UI now looks much less cramped.
• The interview room mobile UI moves the preview section to a retractable panel on the bottom, so the code section takes the entire width of the screen. The preview panel can be opened and closed on click.
• The past saves mobile UI similarly mimics the code section of interview rooms, albeit without the panel for previews.

Testing

To test locally, run docker-compose -f docker-compose.dev.yml up --build and visit localhost:7777/interview to view the changes.