PLFM-2251 Use JUnit Assume to conditionally skip integration tests.
Revert JUnit Assume as AssumptionViolatedException not caught by the Spring runner.
Rename DataPoint to TimeDataPoint.
Add DAO for unique counts.
Rename ClientMetricDao to the more generic TimeSeriesDao.
Shorten name UniqueCountMetricDao to UniqueCountDao.
Merge pull request #7 from eric-wu/master

Massive renaming, refactoring.