Copy testUtils from mocks repo into compenents repo

[sadafie]

We want to minimize the number of dependencies that the meetup-web-mocks repo has, so we're going to have each consumer repo maintain it's own testUtils.jsx.

[coveralls]

Coverage remained the same at 70.276% when pulling 32211d9 on feature/testUtils into 934d6e0 on master.

[eilinora]

is mocks repo going away?

[sadafie]

No it's not. We're trying to pair it down to a zero-depedenc repo, so it's just the JS files for the mocks and nothing else. It's just a simplification / optimization, so we don't have so many dependencies updating across as many repos.

[mmcgahan]

I think it will be easier long-term to leave testUtils.js out of this repo and just use scryRenderedComponentsWithType() instead - it requires a small refactor, but it's worth it in order to use the more 'standard' test utilities and keep the repo simpler

[sadafie]

I think it will be easier long-term to leave testUtils.js out of this repo and just use scryRenderedComponentsWithType() instead

done

[coveralls]

Coverage remained the same at 70.276% when pulling 1ba6cc0 on feature/testUtils into 934d6e0 on master.