Accordions Background Image bug

This seems to be a recurring bug...  It was fixed previously but it's back.

When using a background image for the heading of each accordion blog, the background image does not show up.

This is because in /accordions/templates/accordion/accordion-hook.php, line 222 creates $header_bg_img with the 'url()' in it and then line 227 tries to show it by using esc_url_raw around it.  It contains 'url(' it so the escaping always fails.  The esc_url_raw function needs to be removed since it is already escaped in line 222.