Template set 'jwinf': Set yellow color for group management button

templates/jwinf/base.hbs

@@ -42,7 +42,7 @@
                 <br>
                 <a href="/profile" class="button is-info is-small">👤 &nbsp; Profil</a>
                 {{#if teacher}}
-                  <a href="/group/" class="button is-info is-small">⚙ &nbsp; Gruppenverwaltung</a>
+                  <a href="/group/" class="button is-warning is-small">⚙ &nbsp; Gruppenverwaltung</a>
                 {{/if}}
               </div>
               <div class="column"><a href="/logout" class="button is-small is-danger" type="submit">⨯ &nbsp; Logout</a></div>