Project Health Page

I created a page through the projects controller to let kochiku report stats on tests that have a history of failing. The stats are curently only really useful if the partitioner consistently creates the same groupings.

I also fixed a few bugs with how the table rows for parts and attempts were being generated.
Do you think these Hashes would be cleaner with the user of a default value? http://www.ruby-doc.org/core-2.1.2/Hash.html#method-c-new