Multiple bug fixes

【Details of fixes】
■【Mac】Fixed a bug that the thickness of Japanese and European characters may be displayed differently when using some fonts.
■Social Button Type 5 (Official Button) “Facebook Like Button” specification change support
■Removed “Google+” from the social button settings.
■Top Page Changed so that the style of the article body is applied to the free space.
■Updated page builder.
・【Firefox, IE】Fixed the problem of Google map display instability.
・Fixed the problem of switching editor and adjusted CSS in WordPress 5.5.
・Fixed a bug that the checkbox of the block border was removed when duplicating a block.
・Fixed other minor bugs.

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

【Modified file】
admin/assets/css/editor-style.css
admin/assets/css/editor-style.min.css
admin/inc/basic.php
front-page.php
inc/head.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/admin/css/admin.css
pagebuilder/assets/admin/js/admin.js
pagebuilder/assets/css/pagebuilder.css
pagebuilder/modules/googlemap.php
pagebuilder/modules/simple_table.php
pagebuilder/modules/slider.php
pagebuilder/pagebuilder.php
style.css
template-parts/sns-btn-btm.php
template-parts/sns-btn-top.php