Updated social button and quick tag functions

【Details of fixes】
■Updated styles and configuration files for quick tags.
■Adjusted the display position of social buttons for detailed articles.
■Removed markup that is no longer needed.

The following are the files that have been modified for this update.
【Modified files】
footer.php
functions.php
admin/theme-options.php
style.css

※In addition to the above, the quick tag setting file has also been updated.
 Please download them from the download URL.

For more information, please visit the CUBEY (tcd023) download site for purchasers.