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 a bug that the checkbox of the block border was removed when duplicating a block.
・Fixed other minor bugs.
■【WordPress5.7】Fixed a bug that “icon font” of fixed page template 3 is not displayed.

The following files have been modified for 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