Fix designer exit full screen mode icon and text back to enter mode

Signed-off-by: William Desportes <williamdes@wdes.fr>

js/designer/move.js

@@ -543,6 +543,9 @@ function Toggle_fullscreen () {
         value_sent = 'on';
         $content.fullScreen(true);
     } else {
+        $img.attr('src', $img.data('enter'))
+            .attr('title', $span.data('enter'));
+        $span.text($span.data('enter'));
         $content.fullScreen(false);
         value_sent = 'off';
     }