Botany Mutation Rework

Reworked the mutation system for Botany to use a "tier system",
adjusting mutation chances and the potential type of mutation based on
the amount of the reagent(s) added.

Also added additional information to the Plant Analyzer when scanning
trays. Will now include information such as age, yield modifier, and
toxicity in the report. This will not be shown when scanning harvested
goods or seeds.

Fixed some typos and missing words in podmen.dm in preparation of
planned attempt to reintegrate pod-cloning functionality.

Unreported change from my previous commit (this is for the sake of
documentation): End of round score will factor Hydroponics harvests into
the calculations.