Merge pull request #217 from leizongmin/master

编辑器进入全屏模式时，调整一下样式
add Google Analytics
Merge pull request #223 from jiyinyiyong/ga

add Google Analytics
将Google tracker可配置化
Merge pull request #224 from JacksonTian/config_ga

将Google tracker可配置化
盒阴影空白的问题，调整图片样式
修复给空值设置属性的错误
Merge pull request #230 from JacksonTian/fix_null

Fix null
fix #237 if topic not exists, do not modified it.
Release 0.3.6
remove travis 0.6
fix #238 topic not exists reply
emit topic
on => all
http://gravatar.qiniudn.com/不可用，换用新的链接
Merge pull request #242 from JacksonTian/fix_avatar

http://gravatar.qiniudn.com/不可用，换用新的链接
Merge pull request #227 from superRaytin/master

盒阴影空白的问题，调整图片样式
更新依赖模块xss版本至v0.0.9