Multi Change Checklist

Checklist for tracking multiplayer issues and/or bugs that are planned to be worked on.

- [x] End mission sexp in multi leads to players not being able to accept debrief stage. From Taylor: "The warp out sequence when the missions ends via sexp was considered a bug, so a special packet was added to skip the whole warp out thing and go straight to debrief. Unfortunately that ignores a bunch of steps that occur during that warp out stuff. Using the proper procedure everything works. So I've just got the find a way to use the full procedure that skips the actual warp out effect, and doesn't require a multi bump"