title: dropzone action after all files are uploaded
body: <p>I'm using dropzonejs this way:</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
          jQuery(function($) {
              try 
              {
                  $(".dropzone").dropzone({
                      paramName: "file", // The name that will be used to transfer the file
                      maxFilesize: 0.5, // MB
                      uploadMultiple: true,
                      //addRemoveLinks : true,
                      dictDefaultMessage :
                          '&lt;span class="bigger-150 bolder"&gt;&lt;i class="icon-caret-right red"&gt;&lt;/i&gt; Drop files&lt;/span&gt; to upload \
                          &lt;span class="smaller-80 grey"&gt;(or click)&lt;/span&gt; &lt;br /&gt; \
                          &lt;i class="upload-icon icon-cloud-upload blue icon-3x"&gt;&lt;/i&gt;',
                      dictResponseError: 'Error while uploading file!',               
                      //change the previewTemplate to use Bootstrap progress bars
                      previewTemplate: "&lt;div class=\"dz-preview dz-file-preview\"&gt;\n  &lt;div class=\"dz-details\"&gt;\n    &lt;div class=\"dz-filename\"&gt;&lt;span data-dz-name&gt;&lt;/span&gt;&lt;/div&gt;\n    &lt;div class=\"dz-size\" data-dz-size&gt;&lt;/div&gt;\n    &lt;img data-dz-thumbnail /&gt;\n  &lt;/div&gt;\n  &lt;div class=\"progress progress-small progress-striped active\"&gt;&lt;div class=\"progress-bar progress-bar-success\" data-dz-uploadprogress&gt;&lt;/div&gt;&lt;/div&gt;\n  &lt;div class=\"dz-success-mark\"&gt;&lt;span&gt;&lt;/span&gt;&lt;/div&gt;\n  &lt;div class=\"dz-error-mark\"&gt;&lt;span&gt;&lt;/span&gt;&lt;/div&gt;\n  &lt;div class=\"dz-error-message\"&gt;&lt;span data-dz-errormessage&gt;&lt;/span&gt;&lt;/div&gt;\n&lt;/div&gt;"
                  });
              } 
              catch(e) 
              {
                  alert('Dropzone.js does not support older browsers!');
              }
  });
  
      &lt;/script&gt;
  </code></pre>
  
  <p>where exactly can I put a listener do do something (reload/redirect/alert) after ALL files are uploaded?</p>