[Rewrite-Frontend]: Demonstrating timetables of friends

### Description

We want to be able to see the timetable of any friend on our list.

### Requirements

- clicking on a friend on the sidebar will replace the user's timetable with a read-only copy of the friend's timetable
- has a term selector to allow switching between terms
- switching between terms shows different timetable of the friend
- the term switching is persistent across **the whole app** (i.e. the user's timetable is also changed to that term as well)
- above the timetable is labelled with the friend's full name and profile picture