Fixed movement from fog of war, .help command

- Enemy champions who walk from the fog of war have their locations
reported correctly now.
(Bug) If they stand still when the user acquires vision of them from the
fog of war, they will remain invisible until they move.
- Renamed some unknowns
- Loading screen now shows names of unconnected players (not loading
progress of others)
- Added .help command (Thanks @Twizzes)
- Item purchases no longer broadcast from the fog of war (still doesn't
show after the champion is revealed)
- Cleaned up spawn packet to reflect its proper packet name
- Updated champion death packet