Merge pull request #91 from youyong205/biz

Biz
add a abtest service
small bug fix
Merge branch 'biz' of https://github.com/dianping/cat into biz-abtest
Merge pull request #92 from ainilife/biz-abtest

ABTest service
Merge branch 'biz' of github.com:dianping/cat into biz
add a abtest component
Merge pull request #93 from ainilife/biz-abtest

add a abtest component
fix abtest name problem
add dependency dashboard