Flowerhack/explicit course run

LMS-2841

https://edx-wiki.atlassian.net/browse/LMS-2841
nitpick: why are you using `'3030'` as the run here? It would be clearer throught the tests to either use a run value we're used to, such as `'2014_Spring'`, or a var name that is clear such as `'run1'`