Remove extensions from files so that links work.
Add links for changing versions, a version dropdown that doesn't work yet, and a few other things.
Add the table of contents of API commands that shows which functions are deprecated or otherwise unavailable.
Replace invalid empty divs with valid empty divs.
Add a footer with some interesting information.
Fix some unhandled commands getting removed.
Forward empty pages.
All of the GL2 categories.
Some GL3 categories.