switch to fastcsv as supercsv is not maintaned anymore

src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.fxml

@@ -5,7 +5,6 @@
 <?import javafx.geometry.Insets?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>
-<?import java.net.URL?>
 <BorderPane fx:id="applicationPane" maxHeight="-Infinity" maxWidth="1000.0" minHeight="700.0" minWidth="-Infinity" prefHeight="700.0" prefWidth="1000.0" xmlns="http://javafx.com/javafx/8.0.101" xmlns:fx="http://javafx.com/fxml/1">
     <top>
         <VBox id="background" prefWidth="100.0" BorderPane.alignment="CENTER">
@@ -265,9 +264,6 @@
     </center>
     <left>
     </left>
-    <stylesheets>
-        <URL value="@/ninja/javafx/smartcsv/fx/smartcsv.css" />
-    </stylesheets>
     <bottom>
         <GridPane hgap="8.0" BorderPane.alignment="CENTER">
             <columnConstraints>