Weed/pest Killers actual Reagents + tweaked L4D

Filled all the nutriment bottles with nutriment + what ever else they
had.

Changed the mutagen to radium in "soft mutate" amounts of 3 (hopefully
any damage it does it covered by the 28 nutrients).

Added new "weedkiller" and "pestkiller" chemicals with recipes using
half of diethylamine + toxins respectively.