Publish failed tests for docs consumption

[andycochran]

Set up web hook so that when master changes:

• Deploy to Dokku
• Run npm test -- -o json on live site, which will output JSON for failed tests
• Concatenate all JSON files in /failures so it can be consumed by geosearch-docs site

---

Since the test suite only logs failed tests, there's no way to publish the positive stuff. Maybe we also output the aggregate test results:

Aggregate test results
Pass: 29
Improvements: 0
Fail: 0
Placeholders: 0
Regressions: 11
Took 1199ms
Test success rate 72.5%

[chriswhong]

We should add this repo to our docker-compose setup so that we can automatically run tests as soon as the import is complete.

• Finish import
• Send slack message about starting tests
• Run tests
• Push results to space
• Fire slack message with links to published files.