Move nprogess color to variable

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/application.scss

@@ -8,8 +8,6 @@
  *= require select2
  *= require highlightjs.min
  *= require_self
- *= require nprogress
- *= require nprogress-bootstrap
  *= require dropzone/basic
 */
 
@@ -20,6 +18,12 @@
  */
 @import 'gl_bootstrap';
 
+/**
+ * NProgress load bar css
+ */
+@import 'nprogress';
+@import 'nprogress-bootstrap';
+
 /**
  * Font icons
  *

app/assets/stylesheets/main/variables.scss

@@ -39,3 +39,8 @@ $border_warning: #EB9532;
  */
 $added: #63c363;
 $deleted: #f77;
+
+/**
+ *
+ */
+$nprogress-color: #3498db;