Improvement of menu display specification and addition of OGP setting function

【Contents of the fix】
■Fixed the problem that the submenu items of the global menu are displayed momentarily when the page is loaded.
■Added OGP setting function to theme options (Facebook/Twitter).

The following files have been modified for this update.
【Corrected files】
admin/theme-options.php
functions.php
header.php
languages/en.mo
languages/en.po
responsive.css
style.css

The following files have been added for this update.
【Added files】
functions/ogp.php

For more information, please visit the download site for purchasers of INNOVATE HACK (tcd025).

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