* Overthrow gamemode, again!
* Fixes objectives even more, especially AI one, removes boss antag subtype
* Fixes and refactors objective code, especially AI
* Expands greeting msg, fixes AI getting storage implant, rewords objectives to make it clear that they're teamshared objectives
* Resets gamemode required players to production values
* Lowered the number of teams existing during highpop
* refactors code a bit, fixes special_report to not use roundstart list, renames converter
* Cannot convert mindshielded people anymore unless you remove the implant
* Changes the Nothing explanation_text of head objective to hint at autoupdating, updates greet()
* Fixes define compile error