Improved display speed and adjusted links and styles

【Fixes】
■Improve the display speed.
■Fixed the link of “Back to Home” in the archive page and category page to return to the top page even if the installation folder of WordPress and the home address are different.
■Adjusted the position of ads and social buttons.
■Updated quick tag content (updated table responsive display to the latest version)

The files that have been modified for this update are as follows
【Added files】
js/slick.css
js/jquery.easing.js
js/slick.min.js

【Modified files】
single.php
navigation.php
index.php
header.php
functions.php
style_sp.css
style_pc.css
style.css

For more information, please visit the download site for the purchaser of Opinion (tcd018).