A new command for signs. Refreshing them, cleaning them, and verifying
them. Changed up some internal apis, if you were using them sorry for
breaking it. Also, really update the signs when we jail someone who is
offline via a new event.
We was saving everything again when the players stop creating anything,
this was causing issues with duplicate cells when using any storage with
SQL (due to insert and no primary key).
Also, added a hasChanged to the cell class which will prevent resaving
things in sql if it hasn't changed.
In the PrisonerManager you can now provide either AnyCell or NoCell and
it'll select a cell or not based upon the provided one. This is breaking
because it changes the required types in the methods and the new cells
don't have anything implemented and throw exceptions.
