Revert "Disabled snapvector functionality."

This reverts commit 6a9a24a39acdef6f2af7ef5b5d9f373338550d8b.
Changed score_info to use namelog, new option for score penalty on early quit.
Fixed the cvar set issue after client disconnect.
Added support for setting player score through score_info.
The old team is no longer stored as part of persistent data when leaving team.