Use minified VueJS CDN Version

This PR disable the Devmode by using the minified VueJS Version as mentioned in the docs:
https://vuejs.org/v2/guide/installation.html#CDN

Author: LKaemmerling

resources/views/dashboard.blade.php

@@ -9,7 +9,7 @@
             integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
             crossorigin="anonymous"></script>
     <script src="https://js.pusher.com/4.3/pusher.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.min.js"></script>
     <script src="https://cdn.plot.ly/plotly-latest.min.js"></script>
 </head>
 
@@ -246,4 +246,4 @@
     });
 </script>
 </body>
-</html>
+</html>