upgrade chart.js lib and fix bargraph. fixes #511

includes/helper/graph_helper.php

@@ -25,7 +25,7 @@ function bargraph($dom_id, $key, $row_names, $colors, $data)
         }
         $datasets[] = [
             'label'     => $name,
-            'fillColor' => $colors[$row_key],
+            'backgroundColor' => $colors[$row_key],
             'data'      => $values
         ];
     }
@@ -34,9 +34,12 @@ function bargraph($dom_id, $key, $row_names, $colors, $data)
       <script type="text/javascript">
       $(function(){
         var ctx = $(\'#' . $dom_id . '\').get(0).getContext(\'2d\');
-        var chart = new Chart(ctx).Bar(' . json_encode([
+        var chart = new Chart(ctx, ' . json_encode([
+            'type'     => 'bar',
+            'data'     => [
                 'labels'   => $labels,
                 'datasets' => $datasets
+            ]
         ]) . ');
       });
       </script>';

package.json

@@ -3,8 +3,8 @@
   "version": "1.1.0",
   "main": "index.js",
   "repository": "https://github.com/engelsystem/engelsystem.git",
-  "author": "marudor <marudor@marudor.de>",
+  "author": "https://github.com/engelsystem/engelsystem/contributors",
-  "license": "MIT",
+  "license": "GPL-2.0-only",
   "scripts": {
     "build": "npm run -s build:clean && NODE_ENV=production run-p build:assets build:webpack",
     "build:clean": "rimraf public/assets",
@@ -15,7 +15,7 @@
   "dependencies": {
     "bootstrap": "^3",
     "eonasdan-bootstrap-datetimepicker": "^4.17.47",
-    "chart.js": "^1",
+    "chart.js": "^2",
     "jquery": "^3.3.1",
     "jquery-ui": "^1.11.2",
     "moment": "^2.8.2",