Noissue - Add support for large-desktop-width to help center

static/scss/layout/_navbar.scss

 // This file is part of help.eyeo.com.
 // Copyright (C) 2017 Eyeo GmbH
 //
 // help.eyeo.com is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
 //
 // help.eyeo.com is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 11 matching lines @@
   background-color: $black;
 }
 
 .navbar a
 {
   color: $white;
 }
 
 .navbar-wrapper
 {
-  width: $navbar-width;
+  width: $large-desktop-width;
   max-width: 100%;
   margin-right: auto;
   margin-left: auto;
   padding-right: $md;
   padding-left: $md;
 }
 
 // Navbar Collapse
 
 .navbar-collapse
@@ skipping 11 matching lines @@
     display: block;
     clear: none;
     width: auto;
   }
 }
 
 .no-js .navbar-collapse
 {
   display: block;
 }