Improved login and prepared logout

Change-Id: I29e7c3752682e1016cbbd861ac1c1c3dd64964ab
diff --git a/dev/scss/header/header.scss b/dev/scss/header/header.scss
index 5d366db..98201e3 100644
--- a/dev/scss/header/header.scss
+++ b/dev/scss/header/header.scss
@@ -114,6 +114,9 @@
     > a.login::after {
       content: $fa-login;
     }
+    > a.logout::after {
+      content: $fa-logout;
+    }
   }
 
   #vc-view > div {