Support for multiple power enrties.

src/engine/wpak/PowerEntry.java

@@ -12,8 +12,8 @@ import java.util.ArrayList;
 
 public class PowerEntry {
     public String power_id;
+    public String power;
     public ArrayList<PowerData> powers = new ArrayList<>();
-    public String powerbase;
     public String target_type;
     public int range;
     public String areaType;