title: Missing locale data for the locale "ru" Angular 5
body: <p>I updated Angular to version 5 and get this error</p>
  
  <p><a href="https://i.stack.imgur.com/QjVt5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QjVt5.png" alt="Error"></a></p>
  
  <p>It seems to me the error with pipe in this line </p>
  
  <p><code>&lt;h5&gt;{{ event.date | date:"yyyy.MM.dd"}}&lt;/h5&gt;</code>.</p>
  
  <p>Anybody knows how to fix this?</p>