Bugs fixed

- Clicking on an upload zone, closing it without adding something, you were not able to click on upload zone again

- Bug with click events in layers module

- Custom message when leaving page after customization is not supported anymore

- Adding an image to upload zone and clicking anywhere while image is loading, the image is not added to upload zone

- Resetting an element had disabled the copy button

- Typo in class-admin-order.php

- Now you can set a single design in different categories

- Export did not work with SVG images