Merge pull request #1 from typecho/master

Merge pull request #62 from shingchi/master
Merge pull request #2 from typecho/master

同步
修整 commentReply 为空时也输出空的 script 标签
Merge pull request #71 from shingchi/master

修整头部函数输出时 commentReply 为空也生成空的 script 标签