Add a cheatsheet for structs to go over inner variables

[nishantc1527]

I wanted to make the cheatsheet more exhaustive while still keeping the simplicity of the old layout. I kept the regular cheatsheet intact (even the mini struct cheatsheet at the bottom), but I added a new one that goes over all the structs and whatever variables they have. This is useful because it's very often necessary to know what the inner variables are called. For example, is it Vector2.a and Vector2.b, or is it Vector2.x and Vector2.y.

Basically, the website looks almost the exact same, with just one extra link at the bottom of the cheatsheet section.

I also noticed that some of the comments were out of date, which was automatically picked up by the script.