added comments. Fixed toString

src/main/java/org/gcube/portlets/widgets/mpformbuilder/shared/metadata/CategoryWrapper.java

@@ -51,6 +51,11 @@ public class CategoryWrapper implements Serializable{
 		this.description = description;
 	}
 
+	/**
+	 * NB!!! DOES NOT USE THIS IN UPTATE/EDIT MODE.
+	 *
+	 * @return the fields for this category
+	 */
 	public List<MetadataFieldWrapper> getFieldsForThisCategory() {
 		return fieldsForThisCategory;
 	}

src/main/java/org/gcube/portlets/widgets/mpformbuilder/shared/metadata/MetadataFieldWrapper.java

@@ -400,7 +400,7 @@ public class MetadataFieldWrapper implements UpdatableField, Serializable {
 		builder.append(", maxOccurs=");
 		builder.append(maxOccurs);
 		builder.append(", currentValues=");
-		builder.append("currentValues");
+		builder.append(getCurrentValues());
 		builder.append("]");
 		return builder.toString();
 	}