add display of actual and maximum users

src/main/resources/templates/detailsMember.html

@@ -63,13 +63,18 @@
             <div class="col-3" style="white-space: nowrap">
                 <div style="display: inline-block; margin: 0">
                     <h2>Mitglieder</h2>
+                    <div>
+                        <h4>
+                            <a th:text="${group.getMembers().size()}"></a>
+                            <a>von maximal</a>
+                            <a th:text="${group.getUserMaximum()}"></a>
+                            <a>Benutzern.</a>
+                        </h4>
+                    </div>
                     <div th:if="${group.getRoles().get(user.getId()) == admin}">
                         <form method="get"
                               th:action="@{/gruppen2/details/members/{id}(id=${group.getId()})}">
-                            <button class="btn btn-secondary"
+                            <button class="btn btn-secondary" style="background: slategrey; float: left">Mitglieder bearbeiten</button>
-                                    style="background: slategrey; float: right">
-                                Mitglieder bearbeiten
-                            </button>
                         </form>
                     </div>
                     <br>