Make mobile-friendly

[zunath]

For the most part, the website is mobile friendly. However there are a handful of places that don't work well when on a smaller screen.

1.) Features page -> The quick links side bar is difficult to use and probably should hide.
2.) Features page -> Ability and skill viewers should have their item lists bumped to above the description.
3.) Home page -> There's some text that overflows to the right, forcing users to scroll horizontally. This should be adjusted so there's only vertical scrolling.