Teleportation needs to be scheduled in sync

- Revert removal of sync scheduled task for teleportation
- Add back listener properties from 5d6f3e1 since they don't interfere

src/main/java/fr/xephi/authme/listener/PlayerListener.java

@@ -193,7 +193,7 @@ public class PlayerListener implements Listener {
         }
     }
 
-    @EventHandler(priority = EventPriority.LOW)
+    @EventHandler(priority = EventPriority.NORMAL)
     public void onPlayerJoin(PlayerJoinEvent event) {
         final Player player = event.getPlayer();
         teleportationService.teleportNewPlayerToFirstSpawn(player);
@@ -206,7 +206,7 @@ public class PlayerListener implements Listener {
     // event caused by "logged in from another location". The nicer way, but only for Spigot, would be
     // to check in the AsyncPlayerPreLoginEvent. To support all servers, we use the less nice way.
 
-    @EventHandler(priority = EventPriority.HIGHEST)
+    @EventHandler(priority = EventPriority.LOW)
     public void onPlayerLogin(PlayerLoginEvent event) {
         final Player player = event.getPlayer();
         final String name = player.getName();

src/main/java/fr/xephi/authme/util/TeleportationService.java

@@ -158,10 +158,15 @@ public class TeleportationService implements Reloadable {
      * @param event  the event to emit and according to which to teleport
      */
     private void performTeleportation(final Player player, final AbstractTeleportEvent event) {
-        bukkitService.callEvent(event);
-        if (player.isOnline() && isEventValid(event)) {
-            player.teleport(event.getTo());
-        }
+        bukkitService.scheduleSyncDelayedTask(new Runnable() {
+            @Override
+            public void run() {
+                bukkitService.callEvent(event);
+                if (player.isOnline() && isEventValid(event)) {
+                    player.teleport(event.getTo());
+                }
+            }
+        });
     }
 
     private static boolean isEventValid(AbstractTeleportEvent event) {