Add an "N/A" icon for EEO-1 for non-US companies

[f3ndot]

For companies and organizations who aren't bound by US regulations and therefore do not need to submit an EEO-1, they should be given an N/A icon of sorts. This would help differentiate between a company who won't make their EEO-1 public, and one who simply doesn't have one.

[hougs]

Very few of the companies that have released data have actually released their EEO-1 documents directly. Many that we include as having released their data have actually only released a subset of it. It may be worth rethinking what columns we check off to represent the "completeness" of the data released. This isn't strictly required for this issue to be resolved, so I'll make a separate one for it.