Sidebar update

frontend/src/pages/sidebar.rs

@@ -259,6 +259,7 @@ pub fn sidebar() -> Html {
                     <ul>
                         <TicketMenu/>
                         <UsersMenu/>
+                        <Link<crate::Route> to={crate::Route::Diagnostics}>{ "Statistiken" }</Link<crate::Route>>
                     </ul>
                 </nav>
             </SidebarStateProvider>