Add Percent Metadata Complete to top-level summary table

[alexeliotlash]

Add a new column with "Percent Metadata Complete" (as seen at the top of http://hdash.website-us-east-1.linodeobjects.com/HTA5.html) to the top-level summary table at http://hdash.website-us-east-1.linodeobjects.com/.

[ecerami]

@alexeliotlash this is in progress. should be deployed tomorrow.

[ecerami]

This is now deployed. See: http://hdash.website-us-east-1.linodeobjects.com/index.html