* Makes browser datum use asset cache
This should shave one or two round trips off of the lag for player preferences window, since it was sending the css for browser datums every load.
* Fix improper casing
Read this for more info http://www.byond.com/forum/?post=1820325
Assuming the user has a modern version of IE installed, this allows access to supported CSS 3 elements that we currently can't use. Visually everything seems to remain the same.
Tried doing this with nano and it stopped working for me. Since I know jack all about how nano works, it stays as-is for now.