SSL support, PHP7 support, etc.

【Contents of revision】
■Support for SSL
■PHP7 support
■Changed so that excerpts are displayed in the notification list.
■The main color and sub color settings in the theme options are now reflected in the global menu of the smartphone version.

The following files have been modified for this update.
【Modified files】
functions/head.php
widget/ad.php
widget/archive_dropdown.php
widget/category_list.php
widget/google_search.php
widget/styled_post_list1.php
archive-news.php
style.css

For more information, please visit the download site for ORION (tcd037) purchasers.