* Emergency Lights now change color depending on alert level and whether or not they are powered.
* Made a condition for null alert level, added summary doc.
* Refactored uid and emergencylightcomponent into Entity<EmergencyLightComponent>
* adds prototype reload for AlertLevelSystem, reorganizes selectable alerts a bit
* makes alert levels not necessarily require localization
* oops
* sus
* does the same for announcements as well
* oh, that's not how that works at all
* ok, NOW it works
* fixes localization, adds event for when alerts are reloaded
* addresses review
