update livemap to use rivets.js bindings for data updates

resources/js/common.js

@@ -1,2 +1,56 @@
+/**
+ *
+ */
 
+const rivets = require('rivets');
 
+/**
+ * Generic formatter to prepend
+ * @param value
+ * @param prepend
+ * @returns {*}
+ */
+rivets.formatters.prepend = function (value, prepend) {
+    return prepend + value
+};
+
+/**
+ * Format minutes into HHh MMm
+ * @param value
+ * @returns {string}
+ */
+rivets.formatters.time_hm = function(value) {
+    const hours = Math.floor(value / 60);
+    const mins = value % 60;
+    return hours + 'h ' + mins + 'm';
+};
+
+/**
+ *
+ * @param value
+ * @param len
+ * @returns {boolean}
+ */
+rivets.formatters.gt = (value, len) => {
+    return value.length > len;
+};
+
+/**
+ *
+ * @param value
+ * @param len
+ * @returns {boolean}
+ */
+rivets.formatters.lt = (value, len) => {
+    return value.length < len;
+};
+
+/**
+ *
+ * @param value
+ * @param len
+ * @returns {boolean}
+ */
+rivets.formatters.eq = (value, len) => {
+    return value.length > len;
+};