- format code;
  - remove unused code.
  - update some code from bootstrap v3.3.7.

  - format code;
  - update some code from bootstrap v3..3.7.

  - change font baseline height to 14% from 15%;
  - add alipay icon and taobao icon: svg source from http://www.iconfont.cn/;
  - remove icon-check2, icon-checked instead of check2.