2020 PvE Overhaul, Phase 1: Current State and NPC/Mission Reworks

[HoakinBlackforge]

We are aware of two problems relating to this area:
1) This plugin seemed to be causing the server to forget about players that disconnected, eventually we hit the limit of 150 players (or so parts of the server thought). Kazinsal has made a patch and I'll review it later, but there's a bigger issue that needs solving first:
2) Mission NPC spawning is broken, even with the PvE controller disabled (not that the controller has anything to do with NPC spawning in the first place).

Well, that didnt take long

Take your time, these changes are the first step towards the betterment of the game.

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