Implementation of ads on article pages for smartphones and fix of multiple bugs

【Contents of the fix】
■Implementation of ads on article pages for smartphones.
■Fixed the fixed footer bar for smartphones.
■Fixed a bug that caused the screen to go blank when PHP 7.1 was applied.

The files that have been modified for this update are as follows
【Corrected files】
ja.mo
ja.po
admin/theme-options
admin/theme-options.php
single.php
responsive.css
functions/head.php
footer.php
style.css
functions/seo.php
footer-bar/footer-bar.css
footer-bar/footer-bar.php
footer-bar/footer-bar.js
footer-bar/footer-bar2.js
front-page.php
functions/repeater.php

For more information, please visit the AVALON (tcd040) download site for purchasers.