Fix usage info for FriendCommand
Made final a few methods in BaseSTBItem which shouldn't be overridden
10K energy cell: any wood type is OK
Simple circuit now uses a bit less redstone in the recipe (but 2 more gold nugget)
Fix http://dev.bukkit.org/bukkit-plugins/sensible-toolbox/tickets/17-blaze-rod-breaks-recipe-book/
- Furnace recipe scanning was being done too early
- Recipe book wasn't drawing buttons if no recipes found, leading to unusable book
Merge branch 'master' of github.com:desht/sensibletoolbox