Applying structured markup to breadcrumb list

■Apply microdata format structured markup recommended by google to the breadcrumb list code.
■Add annotations to theme options.
※Added an annotation to the theme options that the footer bar will be automatically hidden when the footer CTA is set to show.

The modified files for this update are as follows
【Corrected files】
admin/inc/footer.php
languages/ja.mo
languages/ja.po
style.css
template-parts/breadcrumb.php

For more details, please see the download site for purchasers of OOPS!(tcd048).