Add ability to change sizes of the components

[kevinmonisit]

"As general advice, I think it would be a lot more pleasing to the eye if everything was smaller. I think a sliding bar that changes the size of the whole middle part (the schedule where it says fall 2021 freshman etc) would be very useful. It just seems very large to me and a little annoying, but people have different preferences, so an option to change size would be ideal. Also, I wish I could manually check off some core requirements. I took some AP exams in high school which fulfilled some of my requirements. The site is of course telling me they’re unfulfilled, since all it knows is the college classes I’ve taken."