Look at each tile the client's actor has moved into
Move hero names from UI to rules config

They will end up as content some day, anyway. Plus many assorted small changes.
Get rid of creturnLn
Add a temporary hack to let games be saved by the server alone

In the future all clients will save their local state separately.
Let each faction win/lose game separately

Save/restore is still done by the server for all factions at once.
Put the semantics of all remaining commands in the ClientAction monad
Cursor mode no longer changes sarena
Reorder definitions in State.hs
Move and fix lookAt
Move Cursor fields directly to StateClient
Let only a couple of ActorState operations look at distant levels