Added functions and style adjustments

【Contents of modification】
■Favicon setting function added.
■Added various color settings for header and footer
■Added recommended article function.
※Added the ability to select the type of article in the “Designed Article List Widget” and “Thumbnail Article List Widget”.
■Adjusted the style.

The following are the files that have been modified for this update.
【Modified files】
admin/theme-options.php
functions/head.php
languages/ja.mo
languages/ja.po
widget/styled_post_list1.php
widgets/styled_post_list4.php
functions.php
header.php
style.css

【Added files】
functions/admin_column.php
functions/quick_edit.php
functions/recommend.php

For more information, please visit the VIEW(tcd032) download site for purchasers.