Enable Enter-Press for submit in modals.

templates/modals/settings.html

@@ -111,6 +111,12 @@
                         alert('Fehler beim Laden der Einstellungen: ' + error.message);
                     });
             });
+
+            settingsModal.addEventListener('keypress', event => {
+                if (event.key === 'Enter') {
+                    submitButton.click();
+                }
+            });
         }
     });
 </script>