Multiple bug fixes

【Contents of fixes】
■Changed Facebook OGP setting from old specification (fb:admins) to new specification (fb:app_id).
※Please refer to the following article about how to get “fb:app_id” (application ID).
 How to get the fb:app ID required for Facebook OGP settings
■Social Button Type 5 (Official Button) “Facebook Like Button” specification change support
■Removed “Google+” from the social button settings.
■Fixed the bug that there is no save button in the “Social Button Display Settings”.
■【Mac】Fixed a bug in which the thickness of Japanese and European text may be displayed differently when using some fonts.

The following files have been fixed in this update.

【Modified file】
admin/theme-options.php
comments.php
editor-style-01.css
functions/ogp.php
functions/seo.php
japanese.css
languages/ja.mo
languages/ja.po
mobile/style-mobile.css
sns_btn_btm.php
sns_btn_top.php
style-pc.css
style.css