Fixed multiple bugs

■【iPhone】Fixed a bug where the Hatena bookmark icon was not displayed on the share button in the fixed footer bar.
■Removed “Google+” from the footer SNS button and site information widget.
■Fixed a bug in the table function (TinyMCE’s table function) included in the visual mode of Classic Editor.
(Responding to the error that the URL to load the JavaScript file in question cannot be found)
■Fixed “Overlay transparency” of header images for fixed pages.
(Fixed a problem where the default value of “0.5” was displayed on the editing screen, even though it was saved and reflected when “0” was set.)

The following files have been modified for this update.

【Modified files】
admin/inc/footer.php
admin/theme-options.php
css/footer-bar.css
footer.php
functions.php
functions/page_cf2.php
functions/update_notifier.php
languages/ja.mo
languages/ja.po
style.css
template-parts/footer-bar.php
widget/site_info.php

【Added files】
img/hatenabookmark-logomark.svg