Fixed multiple bugs

【Contents of fixes】
■Fixed a bug that social buttons were displayed out of the column width when the display setting was set to “Button Type 3 (column width + color)” or “Button Type 4 (column width + mono)”.
■Fixed the bug that the main color is not applied to “Contributor Name” on the archive page.
■Fixed the bug that the date, category, and number of views are also hidden when the thumbnail is hidden.
■Fixed a bug in which changing the value of the interval at which the carousel switches in the blog content settings of the top page was not reflected.
■Fixed the bug that h1 does not exist only on the top page.

【Fixed files】
functions/head.php
header.php
js/functions.js
single.php
style.css