Multiple bug fixes

【Fixed content】
■Fixed a bug in which images are inserted into the selection radio of theme options.
■Fixed the bug that the text size of the fixed page is not reflected even if it is changed.
■Deleting unnecessary files.

The following files have been modified for this update.
【Corrected files】
admin/css/my_admin.css
admin/inc/basic.php
admin/inc/blog.php
admin/inc/options.php
functions.php
functions/head.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/admin/css/admin.css
pagebuilder/assets/admin/js/admin.js
pagebuilder/assets/css/googlemap.css
pagebuilder/modules/includes/slick.php
pagebuilder/modules/slider.php
pagebuilder/pagebuilder.php
style.css

【Added files】
admin/img/gmap_marker_type1.jpg
admin/img/gmap_marker_type2.jpg
admin/img/page_link_type1.jpg
admin/img/page_link_type2.jpg
admin/img/share_type1.jpg
admin/img/share_type2.jpg
admin/img/share_type3.jpg
admin/img/share_type4.jpg
admin/img/share_type5.jpg

【Deleted files】
css/test.txt
backup/admin/front_page.php
backup/admin/my_admin.css
backup/etc.txt
backup/functions/head.php
backup/style – コピー.css
backup/style – 繧ウ繝斐・.css
backup/style.css
backup/template-part/event-archive.php
backup/test.txt