Merge pull request #53 from ainilife/master

Page allAbtestView finished and bug fix
Merge pull request #57 from atellwu/abtest2

完成abtest 管理端crud代码
refactor cat-core according to the change of abtest model
编写了基于netty单播/组播的client和server，按照client sayhello，server sendInterval的流程工作。