Fix debug PG

Playground/debug.html

@@ -120,7 +120,8 @@
             <div class="button" id="saveButton1280"><img src="css/img/saveButton.svg"></div>
             <div class="button removeOnPhone" id="zipButton1280"><img src="css/img/downloadButton.svg"></div>
             <div class="button" id="newButton1280"><img src="css/img/newButton.svg"></div>
-            <div class="button removeOnPhone" id="clearButton1280"><img src="css/img/clearButton.svg"></div>
+            <div class="button removeOnPhone" id="clearButton1280"><img src="css/img/clearButton.svg"></div>            
+            <div class="buttonPG removeOnPhone" id="diffButton1280"><img src="css/img/diffButton.svg"></div>
             <div class="button select" id="menuButton1280"><img src="css/img/optionsButton.svg">
                 <div class="toDisplay languageJS">
                     <div class="option subSelect">Theme <i class="fa fa-chevron-right" aria-hidden="true"></i>