* Implement showing rules on first connection
* Clean up RulesManager
* Change changelog and rules unread to use CVars
* Fix missing change
* Rename InfoWindow to RulesAndInfoWindow
* Change default server.id to unknown
* Fix invalid file contents and getting CVar
* GameTicker turned into an EntitySystem
* Turns ClientGameTicker into an EntitySystem, turn NetMessages into events
* Change event names to be more consistent with the rest.
* YAML linter uses the dummy gameticker CVar override.
* Fix game ticker initialization order
* Dummy ticker won't spawn players.
* Fix character creation test
