Method made static and moved to manager.

src/engine/jobs/UpgradeBuildingJob.java

@@ -1,5 +1,6 @@
 package engine.jobs;
 
+import engine.gameManager.BuildingManager;
 import engine.job.AbstractScheduleJob;
 import engine.objects.Building;
 import org.pmw.tinylog.Logger;
@@ -39,7 +40,7 @@ public class UpgradeBuildingJob extends AbstractScheduleJob {
         // SetCurrentRank also changes the mesh and maxhp
         // accordingly for buildings with blueprints
 
-        rankingBuilding.setRank(rankingBuilding.getRank() + 1);
+        BuildingManager.setRank(rankingBuilding, rankingBuilding.getRank() + 1);
 
         // Reload the object