Multiple bug fixes

【Contents of the fix】
■Fixed a bug in which the global menu was not displayed properly when viewed on a smartphone.
■Fixed a bug in which certain categories were removed from new posts on the top page.

The following are the files that have been modified for this update.
【Corrected files】
index.php
header.php

For more information, please visit the IZM (tcd034) download site for purchasers.