title: Date formating in handson table
body: <p>I am using handson table lib in my angular project.  have a date column and i want the dates to be formatted like that DD/MM/YYYY at the init of the table but unfortunately nothing is happened and even when i call afterRender() in angular's hooks(after view init and after view checked ) it tolds me cannot render of undefined so it's like the table is undefined at this time.
  So what is the sollution for that? 
  this is  afterRender method </p>
  
  <pre><code>private afterRender( ) {
    console.log("rendere")
    this.hotRegisterer.getInstance(this.idTableau).render();
    this.hotRegisterer.getInstance(this.idTableau).validateCells();
  }
  </code></pre>
  
  <p>this is my settings </p>
  
  <pre class="lang-js prettyprint-override"><code>hotSettings: Handsontable.GridSettings = {
    height: MajStockComponent.HANDSON_TABLE_HEIGHT,
    width: MajStockComponent.HANDSON_TABLE_WIDTH,
    stretchH: 'all',
    rowHeaderWidth: MajStockComponent.HANDSON_TABLE_ROW_HEADER_WIDTH,
    colWidths: MajStockComponent.HANDSON_TABLE_COL_WIDTH,
    colHeaders: MajStockComponent.HANDSON_TABLE_IS_COL_HEADER,
    licenseKey: ConstantesNuc.LICENCE_KEY_TABLE_HANDSOME_TABLE,
    language: ConstantesNuc.HANDSOME_FR,
    columns: [
      {
        data: "code",
        type: 'text',
        readOnly: true
      },
      {
        data: "num",
        type: 'text',
        readOnly: true
      },
      {
        data: "date",
        type: 'date',
        readOnly: true,
        dateFormat: 'DD/MM/YYYY',
        correctFormat: true,
      },
    ],
    nestedHeaders: [
      [{
        label: '',
        colspan: 3
      }],
      ['Code ', 'Num ', 'Date']
    ],
    afterLoadData: (bool) =&gt; {
      this.afterRender();
    },
  }
  </code></pre>