- 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_Full_Project/scss/bootstrap/bootstrap.scss

@@ -1,5 +1,5 @@
 /*!
- * Bootstrap v4.0.0-beta (https://getbootstrap.com)
+ * Bootstrap 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)
@@ -8,6 +8,7 @@
 @import "functions";
 @import "variables";
 @import "mixins";
+@import "root";
 @import "print";
 @import "reboot";
 @import "type";