Fix RegionDataRepository

Add DefaultFlagStorage

BauSystem/BauSystem_RegionFixed/src/de/steamwar/bausystem/region/fixed/FixedRegion.java

@@ -137,6 +137,11 @@ public class FixedRegion implements Region {
         public void delete() {
             file.delete();
         }
+
+        @Override
+        public long getCreationTime() {
+            return file.lastModified();
+        }
     }
 
     public FixedRegion(String name, FixedRegionData flagStorage, Prototype prototype, YAPIONObject regionConfig, YAPIONObject regionData) {