Merge pull request #154 from unidal/biz

remove some unused files
refactor metric report
merger
Merge pull request #155 from sunryuan/biz

refactor metric report
modify the chart builder
Merge pull request #156 from youyong205/biz

modify the chart builder
change the maven repository
Merge branch 'biz' of github.com:dianping/cat into biz
add unit tests for abtest
add cat-intg-test
Merge pull request #157 from ainilife/biz-abtest

add unit tests
touched
Merge branch 'biz' of github.com:dianping/cat into biz
Update .travis.yml
Update .travis.yml
try to fix test failures by adding timezone support to PlainTestMessageCodec