- update: Bootstrap version to v4.0.0-beta.2

- update: vue-chartjs version to 3.0.0
- refactor: Remove old SCSS variables
- refactor: Breadcrumb Menu styles
- fix: External links issue
- fix: Mobile sidebar-nav height issue

Vue_Starter/scss/bootstrap/bootstrap-reboot.scss

@@ -1,9 +1,12 @@
-// Bootstrap Reboot only
-//
-// Includes only Normalize and our custom Reboot reset.
+/*!
+ * Bootstrap Reboot v4.0.0-beta.2 (https://getbootstrap.com)
+ * Copyright 2011-2017 The Bootstrap Authors
+ * Copyright 2011-2017 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */
 
 @import "functions";
 @import "variables";
 @import "mixins";
-
 @import "reboot";