Fix old categorization problems
Class, faction, reputation, and profession restrictions are all currently ignored by Can I Mog It. These all need to be considered for completely accurate tooltips.
The biggest problem is Class restrictions (#7) as we are incorrectly reporting things as "Learned from another item" when the appearance still cannot be used. This is a big problem for transmog farming, crafting tier look-a-likes, and even just ransom pieces you might not expect (ie. DK starting gear bracers sharing an appearance with other plate).