Multiple bug fixes

【Contents of the fix】
■Fixed a bug where the header content would not be displayed if the catchphrase was left blank when the header content type was set to “Image Slider” in TCD Theme > Top Page > Header Content.
■Fixed a bug that prevented users from entering text in some fields when accessing the admin screen on an iPad.

【Modified file】
admin/assets/css/footer-bar.css
admin/assets/css/footer-bar.min.css
admin/assets/js/my_script.js
admin/assets/js/my_script.min.js
style.css
template-parts/header-contents.php