Updated item links

For the past several months, I've been using code created by Okoloth to generate pop-up item links from Allakhazam's database. Although the code works fine, it wasn't nearly as "pretty" as other item links nor as complete as I'd have liked due to Allakhazam's lack of data from the PTR. Fortunately, Wowhead has released a script to allow linking directly to their database, so I switched all the links in my blogs over to this new code. (For those that are interested in using this code for their own blogs or websites, the details can be found here.)