change build.gradle to avoid findBugs
Merge remote-tracking branch 'upstream/master' into develop
Merge remote-tracking branch 'upstream/master' into develop
restore findbugs
Return an empty set when the response has no results.
Merge pull request #55 from eric-wu/master

Return an empty set when the response has no results.
adds certified user quiz request metric
adds test for unique count certified user quiz request metric
changes the Metric name
changes the uri to test
adds certified user quiz submit metric
adds a test for certified user quiz submit metric
changes the error message in getMetricId()
adds real record and more test cases for request metric test
adds more test cases for submit metric test
remove empty lines
remove whitespace
changes test names and adds the right notation
resolves conflict
adds new line at end of file