Fixed multiple bugs

【Contents of the fix】
■Fixed a bug in the slider of the fixed page template 2 when there was a field with no image set.
■Fixed a bug that the option “Show linked URLs in a new tab” in the footer “Company Information Settings > Reservation Information” did not work.
■Fixed a bug in the navigation of topics on the top page when viewed from a smartphone.
■Page builder has been updated to ver. 1.2.1.
※This allows for multiple sliders to be placed on the same page.
■Fixed a layout collapse that may occur in IE.
■Corrected the wording in the TCD theme options.

The following files have been modified for this update.
【Corrected files】
admin/inc/basic.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/admin/js/admin.js
pagebuilder/assets/admin/js/editor.js
pagebuilder/assets/admin/js/repeater.js
pagebuilder/assets/css/pagebuilder.css
pagebuilder/assets/css/slider.css
pagebuilder/assets/css/tab.css
pagebuilder/modules/googlemap.php
pagebuilder/modules/includes/theme_options.php
pagebuilder/modules/slider.php
pagebuilder/pagebuilder.php
template-parts/page-type4.php
footer.php
style.css

【Added files】
pagebuilder/assets/admin/js/slider.js