MONKEY MODE: "IT ACTUALLY WORKS" EDITION

Probability support for monkey mode.
Player config support for monkey mode.
Check Antags support for monkey mode.
fixes the colon 'issue' by making the code worse
thanks obama
Merge branch 'master' of https://github.com/tgstation/-tg-station into go_ape
Update monkey.dm

2 people monkey rounds are the best
Merge pull request #4165 from Cheridan/go_ape2

MONKEY MODE: COLON CANCER EXCISION EDITION