title: CKEditor automatically removes style attribute and add xss attribute 'Removed'
body: <p>CKEditor automatically removes style attribute and add xss attribute 'removed' like if I put a style attribute in a element:</p>
  
  <pre><code>&lt;div class="text-center" style="text-align: center;"&gt;Test Heading&lt;/div&gt;
  </code></pre>
  
  <p>After save I got the following output:</p>
  
  <pre><code>&lt;div class="text-center" xss="removed"&gt;Test Heading&lt;/div&gt;
  </code></pre>
  
  <p>My configuration is:</p>
  
  <pre><code>var toolbar_custom=[
      { name: 'document', items: [ 'Source' ] },
      { name: 'editing', items: [ 'Scayt' ] },
      { name: 'basicstyles', items: [ 'Bold', 'Italic', 'Underline', 'Strike', 'Subscript', 'Superscript', '-', 'RemoveFormat' ] },
      { name: 'paragraph', items: ['JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock'] },
      { name: 'insert', items: [ 'Image', 'Flash', 'Table', 'HorizontalRule', 'Smiley', 'SpecialChar', 'PageBreak', 'Iframe' ] },
      { name: 'links', items: [ 'Link', 'Unlink', 'Anchor' ] },
      { name: 'styles', items: [ 'Styles', 'Format', 'Font', 'FontSize' ]}
  
  ];
  
  jQuery(function(){
          CKEDITOR.replace('template_editor_custom',{
              uiColor:'#2778a7', 
              toolbar:toolbar_custom,
              autoParagraph:false,
              enterMode:CKEDITOR.ENTER_DIV,
              allowedContent:true,
              extraAllowedContent:'*{*}'
          })
      });
  </code></pre>
  
  <p>Html:</p>
  
  <pre><code>&lt;textarea class="form-control textbox-style" id="template_editor_custom" name="page[content]" placeholder="Page content"&gt;&lt;?php echo set_value('page[content]', $content); ?&gt;&lt;/textarea&gt;
  </code></pre>