Added test_helpers module

Removed a bunch of duplicated code from test scripts
Made false negative tests more precise

Also added some more comments to test_helpers
Scoring changes and test cleanup

Fixed bug in Scorer where window length was not used to compute relative scores.

Made some tests a bit more stringent.

Improved comments.  Misc test cleanup.
Merge pull request #35 from subutai/score_testing_cleanup

Score testing cleanup
Misc cleanup

Added combine labels to test script.
Fixed timestamp format in visualizer
Misc cleanup

Improved labeler error message.
Script to create empty labels file
Minor cleanups
Merge pull request #37 from subutai/more_cleanup

More cleanup