修正電子報的樣版
mainfunc::get_short_str新增第三個參數連結，在縮減字串時會出現

Conflicts:
	lang/chs-utf8.php
	lang/cht-utf8.php
	lang/eng-utf8.php
	lang/fre-utf8.php
	lang/ger-utf8.php
	lang/ind-utf8.php
	lang/jap-utf8.php
	lang/kor-utf8.php
	lang/por-utf8.php
	lang/rus-utf8.php
	lang/spa-utf8.php
	lang/tur-utf8.php
新增mainfunc::truncate

Conflicts:
	libs/libs-main.php
mainfunc::get_short_str使用mainfunc::truncate來減縮字串
Merge branch 'eng.local' into cht.local
取代產品敘述的檔案路徑
電子報產品敘述上限100字