added license header to fxml files properly

Author: Martin Plieske

src/main/resources/layouts/ProjectDetailLayout.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import java.lang.*?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>

src/main/resources/layouts/ViewLayout.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import java.lang.*?>
 <?import javafx.geometry.*?>
 <?import javafx.scene.*?>

src/main/resources/layouts/ViewLayoutPopup.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import java.lang.*?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>

src/main/resources/layouts/about.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.Hyperlink?>
 <?import javafx.scene.control.Label?>

src/main/resources/layouts/report.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import java.lang.*?>
 <?import javafx.geometry.*?>
 <?import javafx.scene.control.*?>

src/main/resources/layouts/settings.fxml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
+<!-- Copyright 2019 doubleSlash Net Business GmbH -->
 <?import java.lang.*?>
 <?import javafx.geometry.*?>
 <?import javafx.scene.*?>