Fixed a variety of issues with the advanced search form:
- fix page crash that was preventing search form from rendering (reported by Engledogg)
- fix issue where the "part type" input wasn't filtering products on the results page
- fixed issue where the "show only" text wasn't showing information for chosen colors
Also:
- launched new "sku picker" control. You won't see this unless you're in the habit of messing with the "variant of" and "reissue of" inputs on the modify product page, but if you are you should check it out. It's still got a few rough edges.
