title: Prevent bootbox from closing pop-up window
body: <p>I am using bootbox to make pop-up windows with forms and I have to validate them and throw error to user if something is wrong with the form fields. 
  But I cannot prevent bootbox window from closing after user clicks '<code>Send</code>' button. I need to show error notifications to user, so errors could be corrected and the form be sent again.</p>
  
  <p><code>return false</code> works ok, but after it I cannot find method, to restore usual method of bootbox to close the windows.</p>
  
  <p>Does somebody faced the same problem and how you get rid of this situation?</p>
  
  <p>As asked, <a href="http://jsfiddle.net/v4v3gyzm/1/" rel="noreferrer">fsFiddle</a>:</p>
  
  <pre><code>&lt;button id="test"&gt;Bootbox&lt;/button&gt;
  </code></pre>
  
  <p><strong>Code:</strong></p>
  
  <pre><code>$(document).ready(function() {
  
      $("#test").on('click', function() {
  
          bootbox.dialog({
              title: "This is a form in a modal.",
              message: '&lt;div class="row"&gt;  ' +
              '&lt;div class="col-md-12"&gt; ' +
              '&lt;form class="form-horizontal"&gt; ' +
              '&lt;div class="form-group"&gt; ' +
              '&lt;label class="col-md-4 control-label" for="name"&gt;Name&lt;/label&gt; ' +
              '&lt;div class="col-md-4"&gt; ' +
              '&lt;input id="name" name="name" type="text" placeholder="Your name" class="form-control input-md"&gt; ' +
              '&lt;span class="help-block"&gt;Here goes your name&lt;/span&gt; &lt;/div&gt; ' +
              '&lt;/div&gt; ' +
              '&lt;div class="form-group"&gt; ' +
              '&lt;label class="col-md-4 control-label" for="awesomeness"&gt;How awesome is this?&lt;/label&gt; ' +
              '&lt;div class="col-md-4"&gt; &lt;div class="radio"&gt; &lt;label for="awesomeness-0"&gt; ' +
              '&lt;input type="radio" name="awesomeness" id="awesomeness-0" value="Really awesome" checked="checked"&gt; ' +
              'Really awesome &lt;/label&gt; ' +
              '&lt;/div&gt;&lt;div class="radio"&gt; &lt;label for="awesomeness-1"&gt; ' +
              '&lt;input type="radio" name="awesomeness" id="awesomeness-1" value="Super awesome"&gt; Super awesome &lt;/label&gt; ' +
              '&lt;/div&gt; ' +
              '&lt;/div&gt; &lt;/div&gt;' +
              '&lt;/form&gt; &lt;/div&gt;  &lt;/div&gt;',
              buttons: {
                  success: {
                      label: "Save",
                      className: "btn-success",
                      callback: function () {
                          var name = $('#name').val();
                          var answer = $("input[name='awesomeness']:checked").val()
                          console.log(name + " " + answer);
                      }
                  }
              }
          });
  
     });
  });
  </code></pre>