Fixed loading not writing blocks to list

src/main/java/eu/ruekov/ruakij/LinkedBeaconTeleporters/linkedBeaconTeleporter/LinkedBeaconTeleporterManager.java

@@ -68,6 +68,8 @@ public class LinkedBeaconTeleporterManager {
                 // Write reference of list
                 lbtBlock.linkedBeaconTeleporters = linkedBeaconTeleporters;
 
+                // Write block to list
+                linkedBeaconTeleporters.add(lbtBlock);
                 // Save to loc-list
                 placedLBTByLoc.put(serializedLoc, lbtBlock);
             }