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.
■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.

The following files have been modified in this update.

【Modified file】
admin/assets/css/editor-style.css
admin/assets/css/editor-style.min.css
admin/assets/images/share_type1.jpg
admin/assets/images/share_type2.jpg
admin/assets/images/share_type3.jpg
admin/assets/images/share_type4.jpg
admin/assets/images/share_type5.jpg
admin/inc/basic.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