创建abtest页面的优化：添加tips
Merge branch 'abtest' of https://github.com/dianping/cat into abtest2
Merge branch 'master' of https://github.com/ainilife/cat into abtest2
Merge branch 'master' of https://github.com/ainilife/cat into abtest2
change abtest database schema
abtest doCreate
Merge branch 'master' of https://github.com/ainilife/cat into abtest2

Conflicts:
	cat-home/src/main/java/com/dianping/cat/system/page/abtest/Payload.java
update cat-home/src/main/resources/META-INF/plexus/components.xml
完成abtest的创建(验证参数/成功时跳转)； TODO：编辑abtest；查看abtest
New feature : suspend or resume an abtest
完成abtest的查看和修改
合并代码，解决冲突。
修复jsp的页面bug
创建abtest时去掉日期的限制
Merge pull request #57 from atellwu/abtest2

完成abtest 管理端crud代码