Add some testing

[AlisonLanski]

Add tests to verify that column names (and values?) are matching across the package for a particular report. A check like this would have caught the "exclusions" problem in OM.

So in sum, these should all be congruent

• column names in specsXX.rda
• column names coming out of create_dummyXX.R
• column names found in sample data (rda)

And if it's not too hard, we can check value ranges too (this one is probably harder though).