Added a reminder to add Datasource calls to Universe.
Modified Datasource initialization to run only once, and per-backend instance initialization to ctor.
Made safemode setSafemode() kick when safemode is enabled.
ServerID can only be 36 characters long!
Lots of work... More loading, basic ORM annotations. Changes to the Flag system to allow basic inheritance. Still needs saving and updating entities. Will probably move Towns and Nations to use an auto-increment ID as the PK to simplify everything.
Load BlockWhitelists.
Added loadTeleports function to prep for loading them. [ci skip]