Make toasts eckig again!

app/templates/base.html.j2

@@ -193,7 +193,7 @@
         }
       }
       {% for message in get_flashed_messages() %}
-      M.toast({"classes": "rounded", "html": '<span>{{ message }}</span><button class="btn-flat toast-action red-text" data-action="close"><i class="material-icons">close</i></button>'});
+      M.toast({"html": '<span>{{ message }}</span><button class="btn-flat toast-action red-text" data-action="close"><i class="material-icons">close</i></button>'});
       {% endfor %}
       for (toastActionElement of document.querySelectorAll(".toast-action[data-action='close']")) {
         toastActionElement.addEventListener("click", function(event) {