Revize ce5bfed1

Changed coordinates to null from 0.0 when not known

re #9625

backend/src/main/java/cz/zcu/kiv/backendapi/catalog/CatalogItemDto.java

@@ -55 +55 @@
     /**
      * Longitude
      */
-    private double longitude;
+    private Double longitude;
 
     /**
      * Latitude
      */
-    private double latitude;
+    private Double latitude;
 
     /**
      * Certainty
      */
-    private int certainty;
+    private Integer certainty;
 
     /**
      * Description