Grinder Refactor

Created by: Kurfursten

All-In-One Grinder had some of the worst code in the game, so I rewrote it. Mortar uses the same functions too now so they're more in-line.

• Clicking a grinder with a stack of minerals now inserts one sheet a time instead of the whole stack (preventing you from wasting a stack)
• Removed the grind/juice dichotomy on grinders which was mostly irrelevant (only Tomatoes used both)
• Added process (to receive special products like flour or juice) and extract (to simply get the reagents out)
• Grinder products from processing grown items get calculated based on potency instead of hardcoded amounts
• Nettles no longer contain nutriment and no longer always produce a hardcoded 10 acid
• Ketchup is now made from tomato juice and sugar

Also @9600bauds