Multiple bug fixes

【Contents of the fix】
■Corresponded to the specification change of social button type 5 (official button) “Facebook Like Button”.
■Removed “Google+” from the social button settings.
■Page builder has been updated.
・【Firefox, IE】Fixed the problem of Google map display instability.
・Fixed the problem of switching editors and adjusted CSS in WordPress 5.5.
・Fixed other minor bugs.
■Fixed an error when a fixed page is included in the search result page.

The following are the files that have been modified in this update.

【Modified file】
admin/theme-options.php
index.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/admin/css/admin.css
pagebuilder/assets/admin/js/admin.js
pagebuilder/modules/googlemap.php
pagebuilder/modules/simple_table.php
pagebuilder/modules/slider.php
pagebuilder/pagebuilder.php
sns-btn-btm.php
sns-btn-top.php
style.css