Added Woodworking tooltip labels
Ignore Woodworking Resins, and some code refactoring

I don't think I have any information beyond what the in-game tooltip says for Woodworking Resins, so I turned those into no-ops. I also refactored the code to make things more readable.
Merge pull request #7 from jhegg/add-woodworking-tooltips

Add woodworking tooltips