Update Maintenance UI for recurring

src/mixins/datetime.js

@@ -26,6 +26,15 @@ export default {
             return dayjs.tz(value, this.timezone).utc().format();
         },
 
+        /**
+         * Used for <input type="datetime" />
+         * @param value
+         * @returns {string}
+         */
+        toDateTimeInputFormat(value) {
+            return this.datetimeFormat(value, "YYYY-MM-DDTHH:mm");
+        },
+
         /**
          * Return a given value in the format YYYY-MM-DD HH:mm:ss
          * @param {any} value Value to format as date time

src/mixins/theme.js

@@ -46,6 +46,10 @@ export default {
                 }
                 return this.userTheme;
             }
+        },
+
+        isDark() {
+            return this.theme === "dark";
         }
     },