title: `console.log(responseText);` and `console.log(file);` not displaying any data
body: <p>I am using following configuration for dropzone.
  My problem is that files are uploading in server but   <code>console.log(response);</code> and <code>console.log(file);</code> are not displaying any content in console.
  Also remove link is not added to picture.  </p>
  
  <pre><code>&lt;form action="UploadImages"
        class="dropzone"
        id="image-uploader" enctype="multipart/form-data"&gt;
      &lt;i class="fa fa-image" id="dzopen"&gt;&lt;/i&gt;
  &lt;/form&gt;                
  &lt;div id="media-upload-previews"&gt;
  &lt;/div&gt;
   Dropzone.options.dz = {
          paramName: "file",
          maxFilesize: 10,
          url: 'UploadImages',
          previewsContainer: "#media-upload-previews",
          uploadMultiple: true,
          parallelUploads: 5,
          maxFiles: 20,
          acceptedFiles: "image/*,audio/*,video/*",
          init: function() {
              this.on("success", function(file, responseText) {
                  var response = jQuery.parseJSON(responseText);
                  alert(file);
                  alert(responseText);
                });
              this.on("thumbnail", function(file, dataUrl) {
                  $('.select_img').html('&lt;img src="' + dataUrl + '" width="50" height="50" alt=""&gt;');
              });
              this.on("removedfile", function(file) {
              });
          }
      }
  </code></pre>
  
  <p><strong>Edit:</strong> Here I want to show image with with and height of 50 (insted of default preview) and after uploading I want to show <code>file, responseText</code> value in console so that i can use it for delete.
  But this is not showing inage with specified width and height and after upload not giving response to console how to do these</p>