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diff --git a/vendor/assets/javascripts/timeago.js b/vendor/assets/javascripts/timeago.js
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+/**
+ * Copyright (c) 2016 hustcc
+ * License: MIT
+ * Version: v2.0.2
+ * https://github.com/hustcc/timeago.js
+ * This is a forked from (https://gitlab.com/ClemMakesApps/timeago.js)
+**/
+/* eslint-disable */
+/* jshint expr: true */
+!function (root, factory) {
+  if (typeof module === 'object' && module.exports)
+    module.exports = factory(root);
+  else
+    root.timeago = factory(root);
+}(typeof window !== 'undefined' ? window : this,
+function () {
+  var cnt = 0, // the timer counter, for timer key
+    indexMapEn = 'second_minute_hour_day_week_month_year'.split('_'),
+
+    // build-in locales: en & zh_CN
+    locales = {
+      'en': function(number, index) {
+        if (index === 0) return ['just now', 'right now'];
+        var unit = indexMapEn[parseInt(index / 2)];
+        if (number > 1) unit += 's';
+        return [number + ' ' + unit + ' ago', 'in ' + number + ' ' + unit];
+      },
+    },
+    // second, minute, hour, day, week, month, year(365 days)
+    SEC_ARRAY = [60, 60, 24, 7, 365/7/12, 12],
+    SEC_ARRAY_LEN = 6,
+    ATTR_DATETIME = 'datetime';
+
+  // format Date / string / timestamp to Date instance.
+  function toDate(input) {
+    if (input instanceof Date) return input;
+    if (!isNaN(input)) return new Date(toInt(input));
+    if (/^\d+$/.test(input)) return new Date(toInt(input, 10));
+    input = (input || '').trim().replace(/\.\d+/, '') // remove milliseconds
+      .replace(/-/, '/').replace(/-/, '/')
+      .replace(/T/, ' ').replace(/Z/, ' UTC')
+      .replace(/([\+\-]\d\d)\:?(\d\d)/, ' $1$2'); // -04:00 -> -0400
+    return new Date(input);
+  }
+  // change f into int, remove Decimal. just for code compression
+  function toInt(f) {
+    return parseInt(f);
+  }
+  // format the diff second to *** time ago, with setting locale
+  function formatDiff(diff, locale, defaultLocale) {
+    // if locale is not exist, use defaultLocale.
+    // if defaultLocale is not exist, use build-in `en`.
+    // be sure of no error when locale is not exist.
+    locale = locales[locale] ? locale : (locales[defaultLocale] ? defaultLocale : 'en');
+    // if (! locales[locale]) locale = defaultLocale;
+    var i = 0;
+      agoin = diff < 0 ? 1 : 0; // timein or timeago
+    diff = Math.abs(diff);
+
+    for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) {
+      diff /= SEC_ARRAY[i];
+    }
+    diff = toInt(diff);
+    i *= 2;
+
+    if (diff > (i === 0 ? 9 : 1)) i += 1;
+    return locales[locale](diff, i)[agoin].replace('%s', diff);
+  }
+  // calculate the diff second between date to be formated an now date.
+  function diffSec(date, nowDate) {
+    nowDate = nowDate ? toDate(nowDate) : new Date();
+    return (nowDate - toDate(date)) / 1000;
+  }
+  /**
+   * nextInterval: calculate the next interval time.
+   * - diff: the diff sec between now and date to be formated.
+   *
+   * What's the meaning?
+   * diff = 61 then return 59
+   * diff = 3601 (an hour + 1 second), then return 3599
+   * make the interval with high performace.
+  **/
+  function nextInterval(diff) {
+    var rst = 1, i = 0, d = Math.abs(diff);
+    for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) {
+      diff /= SEC_ARRAY[i];
+      rst *= SEC_ARRAY[i];
+    }
+    // return leftSec(d, rst);
+    d = d % rst;
+    d = d ? rst - d : rst;
+    return Math.ceil(d);
+  }
+  // get the datetime attribute, jQuery and DOM
+  function getDateAttr(node) {
+    if (node.getAttribute) return node.getAttribute(ATTR_DATETIME);
+    if(node.attr) return node.attr(ATTR_DATETIME);
+  }
+  /**
+   * timeago: the function to get `timeago` instance.
+   * - nowDate: the relative date, default is new Date().
+   * - defaultLocale: the default locale, default is en. if your set it, then the `locale` parameter of format is not needed of you.
+   *
+   * How to use it?
+   * var timeagoLib = require('timeago.js');
+   * var timeago = timeagoLib(); // all use default.
+   * var timeago = timeagoLib('2016-09-10'); // the relative date is 2016-09-10, so the 2016-09-11 will be 1 day ago.
+   * var timeago = timeagoLib(null, 'zh_CN'); // set default locale is `zh_CN`.
+   * var timeago = timeagoLib('2016-09-10', 'zh_CN'); // the relative date is 2016-09-10, and locale is zh_CN, so the 2016-09-11 will be 1天前.
+  **/
+  function Timeago(nowDate, defaultLocale) {
+    var timers = {}; // real-time render timers
+    // if do not set the defaultLocale, set it with `en`
+    if (! defaultLocale) defaultLocale = 'en'; // use default build-in locale
+    // what the timer will do
+    function doRender(node, date, locale, cnt) {
+      var diff = diffSec(date, nowDate);
+      node.innerHTML = formatDiff(diff, locale, defaultLocale);
+      // waiting %s seconds, do the next render
+      timers['k' + cnt] = setTimeout(function() {
+        doRender(node, date, locale, cnt);
+      }, nextInterval(diff) * 1000);
+    }
+    /**
+     * nextInterval: calculate the next interval time.
+     * - diff: the diff sec between now and date to be formated.
+     *
+     * What's the meaning?
+     * diff = 61 then return 59
+     * diff = 3601 (an hour + 1 second), then return 3599
+     * make the interval with high performace.
+    **/
+    // this.nextInterval = function(diff) { // for dev test
+    //   var rst = 1, i = 0, d = Math.abs(diff);
+    //   for (; diff >= SEC_ARRAY[i] && i < SEC_ARRAY_LEN; i++) {
+    //     diff /= SEC_ARRAY[i];
+    //     rst *= SEC_ARRAY[i];
+    //   }
+    //   // return leftSec(d, rst);
+    //   d = d % rst;
+    //   d = d ? rst - d : rst;
+    //   return Math.ceil(d);
+    // }; // for dev test
+    /**
+     * format: format the date to *** time ago, with setting or default locale
+     * - date: the date / string / timestamp to be formated
+     * - locale: the formated string's locale name, e.g. en / zh_CN
+     *
+     * How to use it?
+     * var timeago = require('timeago.js')();
+     * timeago.format(new Date(), 'pl'); // Date instance
+     * timeago.format('2016-09-10', 'fr'); // formated date string
+     * timeago.format(1473473400269); // timestamp with ms
+    **/
+    this.format = function(date, locale) {
+      return formatDiff(diffSec(date, nowDate), locale, defaultLocale);
+    };
+    /**
+     * render: render the DOM real-time.
+     * - nodes: which nodes will be rendered.
+     * - locale: the locale name used to format date.
+     *
+     * How to use it?
+     * var timeago = new require('timeago.js')();
+     * // 1. javascript selector
+     * timeago.render(document.querySelectorAll('.need_to_be_rendered'));
+     * // 2. use jQuery selector
+     * timeago.render($('.need_to_be_rendered'), 'pl');
+     *
+     * Notice: please be sure the dom has attribute `datetime`.
+    **/
+    this.render = function(nodes, locale) {
+      if (nodes.length === undefined) nodes = [nodes];
+      for (var i = 0; i < nodes.length; i++) {
+        doRender(nodes[i], getDateAttr(nodes[i]), locale, ++ cnt); // render item
+      }
+    };
+    /**
+     * cancel: cancel all the timers which are doing real-time render.
+     *
+     * How to use it?
+     * var timeago = new require('timeago.js')();
+     * timeago.render(document.querySelectorAll('.need_to_be_rendered'));
+     * timeago.cancel(); // will stop all the timer, stop render in real time.
+    **/
+    this.cancel = function() {
+      for (var key in timers) {
+        clearTimeout(timers[key]);
+      }
+      timers = {};
+    };
+    /**
+     * setLocale: set the default locale name.
+     *
+     * How to use it?
+     * var timeago = require('timeago.js');
+     * timeago = new timeago();
+     * timeago.setLocale('fr');
+    **/
+    this.setLocale = function(locale) {
+      defaultLocale = locale;
+    };
+    return this;
+  }
+  /**
+   * timeago: the function to get `timeago` instance.
+   * - nowDate: the relative date, default is new Date().
+   * - defaultLocale: the default locale, default is en. if your set it, then the `locale` parameter of format is not needed of you.
+   *
+   * How to use it?
+   * var timeagoLib = require('timeago.js');
+   * var timeago = timeagoLib(); // all use default.
+   * var timeago = timeagoLib('2016-09-10'); // the relative date is 2016-09-10, so the 2016-09-11 will be 1 day ago.
+   * var timeago = timeagoLib(null, 'zh_CN'); // set default locale is `zh_CN`.
+   * var timeago = timeagoLib('2016-09-10', 'zh_CN'); // the relative date is 2016-09-10, and locale is zh_CN, so the 2016-09-11 will be 1天前.
+   **/
+  function timeagoFactory(nowDate, defaultLocale) {
+    return new Timeago(nowDate, defaultLocale);
+  }
+  /**
+   * register: register a new language locale
+   * - locale: locale name, e.g. en / zh_CN, notice the standard.
+   * - localeFunc: the locale process function
+   *
+   * How to use it?
+   * var timeagoLib = require('timeago.js');
+   *
+   * timeagoLib.register('the locale name', the_locale_func);
+   * // or
+   * timeagoLib.register('pl', require('timeago.js/locales/pl'));
+   **/
+  timeagoFactory.register = function(locale, localeFunc) {
+    locales[locale] = localeFunc;
+  };
+
+  return timeagoFactory;
+});