QuickFormQuery.php: download dialog - rotating gear replaced by a SVG - that one is centered.

extension/qfq/qfq/QuickFormQuery.php

@@ -937,7 +937,7 @@ class QuickFormQuery {
                     <h4 class="modal-title" id="qfqModalTitle101">Loading Document</h4>
                 </div>
                 <div class="modal-body" style="text-align: center;">
-                    <span class="glyphicon glyphicon-cog glyphicon-spin text-large-with-margin text-primary"></span>
+                    <img class="qfq-icon-gear glyphicon-spin" src="typo3conf/ext/qfq/Resources/Public/icons/gear.svg">
                     <p id="qfqModalText101">Document is being generated. Please wait.</p>
                 </div>
                 <div class="modal-footer">