Merge pull request #330 from atellwu/softbalance

task生命周期基本完成。
bug fix
bug fix
Merge pull request #333 from leoliang/master

bug fix
Merge pull request #334 from atellwu/softbalance

Softbalance 	添加ifelse的界面整套；添加after/before的model，未做界面。
Merge pull request #335 from atellwu/softbalance

	backup 软负载的f5转换nginx文件
手机和团购迁移中遇到的bug fix
Merge pull request #338 from leoliang/master

手机和团购迁移中遇到的bug fix
refactor
Merge pull request #339 from leoliang/master

refactor
add rsponse-content for directive return
Merge pull request #340 from leoliang/master

add rsponse-content for directive return
bug fix
Merge pull request #341 from leoliang/master

bug fix
增加common规则处理
Merge pull request #343 from leoliang/master

增加common规则处理
新增more_clear_headers
Merge pull request #344 from leoliang/master

新增more_clear_headers
由于大小写问题，prefix在生成config时，改为regex