fixes #10126: conversion of show_pickup_messages to use item.display_name(int amount) instead of "%ss" junk
variable renaming (item_invlet -> item_info)
recolor bio-operator
Literal "Hot"-Fixes
Merge plural pickup fix, bio-operator recolor, "hot" fixes.
Merge branch 'master' of https://github.com/CleverRaven/Cataclysm-DDA