fix parsing of cron pattern

in some old instances, we had "00 00  * * *" (note double space
and only 5 components).

dashboard/src/views/BackupSitesView.vue

@@ -17,7 +17,7 @@ import SystemBackupList from  '../components/SystemBackupList.vue';
 import { TASK_TYPES } from '../constants.js';
 import BackupSitesModel from '../models/BackupSitesModel.js';
 import TasksModel from '../models/TasksModel.js';
-import { cronDays, cronHours, regionName } from  '../utils.js';
+import { prettySchedule, regionName } from  '../utils.js';
 
 const profile = inject('profile');
 
@@ -50,30 +50,6 @@ function onEditConfig(site) {
   backupSiteConfigDialog.value.open(site);
 }
 
-function prettyBackupSchedule(pattern) {
-  if (!pattern) return '';
-
-  const tmp = pattern.split(' ');
-  if (tmp.length === 1) return pattern.charAt(0).toUpperCase() + pattern.slice(1); // case for 'never' - capitalize
-
-  const hours = tmp[2].split(',').sort((a, b) => Number(a) - Number(b));
-  const days = tmp[5].split(',').sort((a, b) => Number(a) - Number(b));
-  let prettyDay;
-  if (days.length === 7 || days[0] === '*') {
-      prettyDay = 'Everyday';
-  } else  {
-      prettyDay = days.map(function (day) { return cronDays[parseInt(day, 10)].name.substr(0, 3); }).join(',');
-  }
-
-  let prettyHour;
-  if (hours.length === 24 || hours[0] === '*') {
-    prettyHour = 'hourly';
-  } else {
-    prettyHour = hours.map(function (hour) { return cronHours[parseInt(hour, 10)].name; }).join(',');
-  }
-  return prettyDay + ' @ ' + prettyHour;
-};
-
 function prettyBackupRetention(retention) {
   function stableStringify(obj) { return JSON.stringify(obj, Object.keys(obj).sort()); }
   const tmp = BackupSitesModel.backupRetentions.find(function (p) { return stableStringify(p.id) === stableStringify(retention); });
@@ -326,7 +302,7 @@ onMounted(async () => {
             </div>
 
             <div>
-              {{ $t('backups.schedule.schedule') }}: <b>{{ prettyBackupSchedule(site.schedule) }}</b>
+              {{ $t('backups.schedule.schedule') }}: <b>{{ prettySchedule(site.schedule) }}</b>
             </div>
             <div>
               {{ $t('backups.schedule.retentionPolicy') }}: <b>{{ prettyBackupRetention(site.retention) }}</b>