Handling versions in config files, test files, and CDF output

[HEdingfield]

ResultsWriter.generateCdfJson() has a line that says outputJson.put("Version", "1.0.0"). Can we verify that this is a CDF / NIST format version, and not the version of our app?

If the former is true, I recommend that we change the entry("Application", line to include the version number of our tabulator there, in addition to the change I made in PR #326.

In that case, though, TabulatorTests.compareJsons() will give us trouble as the versions change. Well also run into the same problem once we start including the version number in the config files, per our discussion in #43.

We need a way to parameterize version number in there (or have the line ignored) when doing the comparison for tests.