Merge branch 'js-i18n-datetime' into 'master'

i18n datetime_utility file

See merge request gitlab-org/gitlab-ce!29193

app/assets/javascripts/lib/utils/datetime_utility.js

@@ -81,7 +81,7 @@ export const getDayName = date =>
  */
 export const formatDate = datetime => {
   if (_.isString(datetime) && datetime.match(/\d+-\d+\d+ /)) {
-    throw new Error('Invalid date');
+    throw new Error(__('Invalid date'));
   }
   return dateFormat(datetime, 'mmm d, yyyy h:MMtt Z');
 };

locale/gitlab.pot

@@ -5369,6 +5369,9 @@ msgstr ""
 msgid "Invalid Login or password"
 msgstr ""
 
+msgid "Invalid date"
+msgstr ""
+
 msgid "Invalid feature"
 msgstr ""