title: Wrong timezone in GridView yii2
body: <p>Hello I have some trouble with timezone. My timeZone is Asia/Novosibirsk.</p>
  <p>In index.php set timezone and yii formatter output:</p>
  <pre><code>\Yii::$app-&gt;formatter-&gt;timeZone // Asia/Novosibirsk
  </code></pre>
  <p>So in <strong>yii\grid\GridView</strong> winget I have the next columns of the same date (<strong>date_add</strong>):</p>
  <pre><code>            [
                'attribute' =&gt; 'date_add',
                'format' =&gt; ['date', 'full']
              ],
              'date_add:datetime',
              [
                'attribute' =&gt; 'date_add',
                'value' =&gt; function($row){
                  return \Yii::$app-&gt;formatter-&gt;asDatetime(new DateTime($row-&gt;date_add), 'full');
                }
              ],
  </code></pre>
  <p>Output different values:
  <a href="https://i.stack.imgur.com/UKSqv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UKSqv.png" alt="enter image description here" /></a></p>
  <p>Only third column is right, 14 December (raw date is <em>2016-12-14 17:00:00</em>).</p>
  <p>I assume, that GridView have own timeZone (or formatter class instance)</p>