Some Fixes

-fixed a buggy thing I caused with the menu bar on mobile
-tweaked how the nobuy class works so that removing it or adding it is
a 1 step deal, and elements around the missing buy button look ok
-fixed the scroll-to actions on mobile, now when you click a link, it
scrolls to the right place
-broke out the desktop vs mobile scroll-to stuff so they’re separate,
based on whether or not the body has the small or large class
-fixed a type bug I added yesterday
-changed the ‘back’ button on the lightbox on mobile so that it’s the
black instead of red, low contrast was kind of janky there
-took off the transitions on that button so it doesn’t fly up to the
top of the screen