Tol can now support 4 max slost at r7/8

src/engine/objects/Blueprint.java

@@ -313,7 +313,7 @@ public class Blueprint {
 
         // Early exit for buildings with single or no slots
 
-        if (this.maxSlots <= 1)
+        if (this.maxSlots <= 1 && this.buildingGroup.equals(BuildingGroup.TOL) == false)
             return maxSlots;
 
         if (this.maxRank == 1 && currentRank == 1)
@@ -328,20 +328,22 @@ public class Blueprint {
             case 3:
             case 4:
             case 5:
-            case 6:
                 availableSlots = 2;
                 break;
+            case 6:
             case 7:
                 availableSlots = 3;
                 break;
             case 8:
-                availableSlots = 1;
+                availableSlots = 3;
                 break;
             default:
                 availableSlots = 0;
                 break;
         }
-
+        if(this.buildingGroup.equals(BuildingGroup.TOL)){
+            availableSlots += 1;
+        }
         return availableSlots;
     }