更新了示例网站样式：小王子礼品
更新了示例网站样式：独好网
更新了示例网站：独好网，响应式导航样式
升级到bootstrap3
将span* 替换为col-md-*
更新navbar
* rewrite bootstrap.zentao in less.
* add style of avatar.
* update style of jumbotron.
* change color of toggle icon.
* remove definetion of width in form.less.
* fix span writting error.
更新了label错误的表述
* fix wrong code of updating to bootstrap3.
* update chapter grid stytem.
* remove glyphicons.
* ajust link color.
+ add koala config file.
* prettier button style.
* buttons look more flat.

update bootstrap.css.