Merge pull request #1463 from florianorben/hide_help_link_on_mobile

hide 'help' link on mobile screens

web/sass-files/sass/partials/_responsive.scss

@@ -78,7 +78,7 @@
     }
 
     .textarea-wrapper {
-        .textbox-preview-link {
+        .textbox-preview-link, .textbox-help-link {
             display: none;
         }
     }