Make this project maintainable

[qaisjp]

I want to refactor and rewrite most of this code. It's a big task, and most of this work will be done next semester, when I have more time. (It's likely I will procrastinate my responsibilities this semester by doing this stuff instead.)

There's a project here logging this work: https://github.com/compsoc-edinburgh/mapp/projects/1

[neanias]

Something worth mentioning about this project being maintainable is that you're the primary maintainer and much of the corporate knowledge is in your head. It might be worth expanding documentation to commit to "paper" what you've learnt in building this, where certain features are, gotchas, etc.