Merge pull request #27 from eric-wu/develop

Click the y axis to restore the original max.
Merge pull request #28 from eric-wu/master

Rewrite the data model to handle multiple x columns
Merge pull request #29 from eric-wu/master

Expand the JavaScript data model
Merge pull request #30 from eric-wu/master

Add new top charts and restore bar chart
Merge pull request #31 from eric-wu/master

Changes from code review.
Merge pull request #32 from eric-wu/master

Restore the Closure compiler as a result of upgrading Play to 2.2.2
Merge pull request #33 from eric-wu/master

Add Google ID to Open ID login; add whitelist.
Merge pull request #34 from eric-wu/master

Add a metric to list top users by counts of unique days
Merge pull request #35 from eric-wu/master

Add trending metrics for users and entities.
Merge pull request #36 from eric-wu/master

Separate the list of metrics into tabs. Add new metrics.
adds Certified Users tab and its metrics
update build.sbt
Merge pull request #37 from kimyen/develop

adds Certified Users tab and its metrics