use of better icons, create a new validation file for csv

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

@@ -39,4 +39,8 @@ public class HeaderConfiguration {
     public String[] getNames() {
         return names;
     }
+
+    public void setNames(String[] names) {
+        this.names = names;
+    }
 }

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

@@ -48,6 +48,10 @@ public class ValidationConfiguration {
         return headerConfiguration.getNames();
     }
 
+    public void setHeaderNames(String[] headerNames) {
+        headerConfiguration.setNames(headerNames);
+    }
+
     public Boolean getIntegerRuleFor(String column) {
         return (Boolean)getValue(column, "integer");
     }