Group scorecards in nav by version, adding a dropdown
If there is only one scorecard, only display the link without a dropdown
Break out scorecards.hbs into partials. Added missing dropdown.js!
Highlight nav when dropdown sub-item is active.
Set the dropdown toggle text to the selected scorecard
Reverse the sort so newer versions come first
Highlight the selected scorecard in the dropdown
Merge pull request #74 from basho/sdc-collapse-scorecard-versions

Clean up the scorecard navigation