Multiple feature additions and wording changes

【Contents of modification】
■Added original social button setting function (selectable from 4 types of button styles)
■Added quick tag function.
■Changed the wording of the theme options.

The following are the files that have been modified for this update.
【Added files】
fonts directory
fonts/icomoon.eot
fonts/icomoon.svg
fonts/icomoon.ttf
fonts/icomoon.woff
fonts/common/no_image_card.gif
sns_btn_btm.php
sns_btn_top.php

【Modified files】
admin/theme-options.php
languages/en.mo
languages/en.po
footer.php
function.php
single.php
style.css

For more information, please visit the download site for purchasers of Precious (tcd019).