Signed-off-by: devYu <devysq@gmail.com>

1. 去掉重复的ToLower
2. getData内部统一ToLower
3.调整getData中对空字符串判断位置
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4. 待确定：在getData中是否有必要进行lock操作

Update httplib support read data from response buffer, add some testcase...

rename SetAgent and ToXML, and update some testcase

Remove some unnecessary code

Another change to match with logs/log.go (and RFC 5424 specs)

To match with logs/log.go (and RFC 5424 specs)

Makes more sense to Use Debug instead of Info?

ajax refresh gc message

Added the UI for Admin monitor page

Update ctx.WriteString multiple buf output