Added a "Suggest a sub-category" link to the toyline picker widget. If the toyline category you're looking for doesn't exist, you can get as close as you can using the picker, then suggest the remainder of the missing path. It doesn't directly make any changes to the toyline tree, but the reviewing moderator will see your suggestion and make the necessary changes.
While I was at it, I also re-styled the part/product modification forms to be a little softer and easier on the eyes. What do you think?
And finally, I also did some styling work on the inline forms for copying and cloning parts (moderators only).