Adding magical RTL updates, including reversing wiki/zone + search + homepage columns

To switch to RTL mode, do this in the console:

`jQuery("html").attr("dir", "rtl"); jQuery("body").removeClass("html-ltr").addClass("html-rtl");`

This swaps the column positions (reverses them) in RTL, as well as reverses basic padding/text-align stuff throughout the wiki, search results page, and homepage.