modify the piechart
modify the piechart
remove blank
remove unused import
modify the cat metric graph builder
modify the cat last hour report
modify the cat cache report
remove unused code
Merge pull request #161 from ainilife/biz

refactor the unit tests
Merge branch 'biz' of github.com:dianping/cat into biz
Merge pull request #163 from ainilife/biz

fix event range bug int unit test of evet analyzer
Merge branch 'biz' of github.com:dianping/cat into biz
modify the test case xml
modify the test xml
Merge pull request #162 from youyong205/biz

Travis pass.
add unit tests for HeartbeatAnalyzer
refactor the unit tests for problem analyzer
add unit tests for StateAnalyzer