Display infinite members message in group search details site

Co-Authored-By: andibuls <andibuls@users.noreply.github.com>
Co-Authored-By: tomvahl <tomvahl@users.noreply.github.com>
Co-Authored-By: Talha Caliskan <killerber4t@users.noreply.github.com>

src/main/resources/templates/detailsNoMember.html

@@ -65,13 +65,14 @@
             <div class="col-3" style="white-space: nowrap">
                 <div style="display: inline-block; margin: 0">
                     <h2>Mitglieder</h2>
-                    <div>
-                        <h4>
+                    <div th:switch="${group.getUserMaximum() != 100000}">
+                        <h4 th:case="${true}">
                             <a th:text="${group.getMembers().size()}"></a>
                             <a>von maximal</a>
                             <a th:text="${group.getUserMaximum()}"></a>
                             <a>Benutzern.</a>
                         </h4>
+                        <h4 th:case="false">unbegrenzte Teilnehmeranzahl</h4>
                     </div>
                 </div>
             </div>