Fixed a bug and applied structured markup to breadcrumb list

【Contents of the fix】
■Apply microdata format structured markup recommended by google to the breadcrumb list code.
■Fixed an issue where the avatar size displayed on the contributor list page was not optimized.
■Changed the wording of theme options (“Theme Options” -> “TCD Theme Options”)
■Adjusted the style of the widget “Designed posts list”.

The following are the files that have been modified for this update.
【Corrected files】
admin/theme-options.php
breadcrumb.php
index.php
languages/ja.mo
languages/ja.po
page-author-list.php
style.css
widget/styled_post_list2.php

【Added files】
fonts/design_plus.eot
fonts/design_plus.svg
fonts/design_plus.ttf
fonts/design_plus.woff

For more information, please see the download site for purchasers of IZM (tcd034).