Multiple bug fixes and specification changes

【Contents of the fix】
■Fixed an error that may occur when submitting an article.
■Fixed an error that may occur in the meta title and meta description fields.
■Fixed a bug where the font size of the title of the results introduction could not be changed.
■Fixed a bug that the quick tag “H5 heading b” was displayed as “H5 heading a” when clicked.
■Changed specifications so that the color of the text displayed in Mega Menu A can be changed (set in the Business Guide category).
■Fixed the bug that the sidebar setting may not be reflected.
■Changed the number of slides in the top page and header content image slider to 5.
■Fixed the site search function so that contents created with Page Builder are also searchable.
■Fixed a bug that the preview may not work properly on pages using Page Builder.

The following files have been modified for this update.
【Fixed files】
admin/inc/top.php
admin/inc/works.php
inc/cf-service_category.php
inc/head.php
inc/menu.php
inc/seo.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/admin/css/admin.css
pagebuilder/assets/admin/js/admin.js
pagebuilder/assets/css/googlemap.css
pagebuilder/modules/includes/slick.php
pagebuilder/modules/slider.php
pagebuilder/pagebuilder.php
template-parts/header-contents.php
functions.php
style.css
taxonomy.php