make the player SAVE the castle

that solves following issues:

1st: you cant save a castle that is not able to be attacked by other players (which get a count of defeted heroes what is even more nuts)
2nd: those players cant hort endless gold and lifeforce without other players be able to attack them
3rd: those players who want to rebuild their castle dont get attacked while removing defence (exept the save the changes on the castle with removed mobs) they can take as long as they want as long the old castle is in the "save-file" the old castle gets attacked until he overwrite the old castle with the rebuild