title: Vaadin Checkbox -- Add a newline on caption
body: <p>I am trying to set the caption of a checkbox and i want to break at a certain point in the string to create a new line without waiting for the word wrap:</p>
  
  <p>When i added the simple <code>\n</code> character to caption string it did not work.</p>
  
  <pre><code>        private CheckBox completeCheckbox;
  completeCheckbox.setCaption("why wont this\n break");
  </code></pre>