title: Datepicker WPFToolkit: shows truncated month
body: <p>I have a problem with the datepicker. 
  When I click on the datepicker, the month is truncated, how is displayed in the image.</p>
  
  <p><a href="http://1drv.ms/1EKZec1" rel="nofollow">Image of my problem</a></p>
  
  <pre><code>&lt;toolkit:DatePicker x:Name="datePickerDataToFatturaSATA" Height="25" Grid.Row="1" Grid.Column="1"&gt;&lt;/toolkit:DatePicker&gt;
  </code></pre>
  
  <p>Here is the actual Grid:</p>
  
  <pre><code>&lt;Grid&gt;
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition&gt;&lt;/RowDefinition&gt;
          &lt;RowDefinition&gt;&lt;/RowDefinition&gt;
      &lt;/Grid.RowDefinitions&gt;
      &lt;Grid.ColumnDefinitions&gt;
          &lt;ColumnDefinition Width="100"&gt;&lt;/ColumnDefinition&gt;
          &lt;ColumnDefinition&gt;&lt;/ColumnDefinition&gt;
          &lt;ColumnDefinition&gt;&lt;/ColumnDefinition&gt;
      &lt;/Grid.ColumnDefinitions&gt;
      &lt;Label Content="Da" Margin="10,0,0,0" Grid.Column="0" Grid.Row="0"&gt;&lt;/Label&gt;
      &lt;toolkit:DatePicker x:Name="datePickerDataFromFattura" Height="25" Grid.Row="0" Grid.Column="1"&gt;&lt;/toolkit:DatePicker&gt;
      &lt;Label Content="A" Margin="10,0,0,0" Grid.Column="0" Grid.Row="1"&gt;&lt;/Label&gt;
      &lt;toolkit:DatePicker x:Name="datePickerDataToFattura" Height="25" Grid.Row="1" Grid.Column="1"&gt;&lt;/toolkit:DatePicker&gt;
      &lt;Button x:Name="InviaFattura" Grid.Row="1" Grid.Column="2" Width="150" Content="Invia Fattura" Style="{DynamicResource RedButtonStyle}" Click="InviaFattura_Click"&gt;&lt;/Button&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p>Help please!</p>