added test count column to github stats table

note: no repositories have the test coverage inserted as a git note currently, where this occurs, a '-' appears.
Xiyang will be updating the repositories shortly to generate the test counts 


trello: https://trello.com/c/tVZSJiAN (other half of card)
PR hosted at : http://dashboard.risevision.com:8000
relates to: Rise-Vision/Dashboard-proxy#19
could @ByronDarlison @tejohnso @alexey-rise review?