bellotastudios/gradecraft-development — pull request #564 by JangoSteve (2013-10-17 22:16:56+00:00)
Title: Analytics role login interactions

Added login counts and interactions aggregates for "student" and "staff" role groups, and added charts to students and staff tabs in the analytics dashboard.

After pushing this, need to run the following rake tasks:

```
bundle exec rake analytics:rebuild_aggregate[CourseRoleLogin]
bundle exec rake analytics:rebuild_aggregate[CourseRoleEvent]
```