Forget all resolved offline identifiers after fetch.

src/main/java/ru/simsonic/rscPermissions/Bukkit/BukkitPermissionManager.java

@@ -35,6 +35,7 @@ public class BukkitPermissionManager extends RestartableThread
 	private final Set<CommandSender> debug = new HashSet<>();
 	public void recalculateOnlinePlayers()
 	{
+		resolutions.clear();
 		updateQueue.addAll(Tools.getOnlinePlayers());
 		rscp.scheduleAutoUpdate();
 	}