uniqueness validation is now also supported by the validation rules editor

src/main/java/ninja/javafx/smartcsv/validation/ValidationConfiguration.java

@@ -52,7 +52,7 @@ public class ValidationConfiguration {
         headerConfiguration.setNames(headerNames);
     }
 
-    public Boolean getUniquenessRuleFor(String column) {
+    public Boolean getUniqueRuleFor(String column) {
         return (Boolean)getValue(column, "unique");
     }
 
@@ -114,6 +114,11 @@ public class ValidationConfiguration {
         setValue(column, value, "not empty");
     }
 
+    public void setUniqueRuleFor(String column, Boolean value) {
+        setValue(column, value, "unique");
+    }
+
+
     public void setMinLengthRuleFor(String column, Integer value) {
         setValue(column, value == null ? null : value.doubleValue(), "minlength");
     }