Fixes #1001. Hide NSFW images by default.

[miketaylr]

(I just realized, this only works for issues with a "nsfw" label already applied. Follow up bug #1086 was filed to make it work as soon as you apply the label)

r? @magsout for CSS
r? @hallvors for JS

[miketaylr]

Ah, need to add fixture data for this:

IOError: [Errno 2] No such file or directory: u'/home/travis/build/webcompat/webcompat.com/tests/fixtures/api/issues/396.json'

[miketaylr]

gif (ignore the compression artifacts)

[magsout]

My first review for the mozLondon week ? 👍

[miketaylr]

My first review for the mozLondon week ? 👍

Heh yeah, no rush!

[magsout]

Except for className, lgtm, nice work @miketaylr

[hallvors]

Indeed, 🆙

[miketaylr]

Cool, thx for review @hallvors and @magsout. Given a few minutes I'll push the follow up commits here.

[hallvors]

Travis seems unhappy about new test(s)?

FAIL: main - Issues - Clicking NSFW images toggles between blurry and not-blurry (1488ms)
AssertionError: expected '.wc-Comment-content-nsfw' to include 'wc-Comment-content-nsfw--display'

[miketaylr]

Travis seems unhappy about new test(s)?

Yeah, hmm. Let me re-test locally and see what's up.

[miketaylr]

Bah, finally fixed the error of the failing test -- I had a stray . in addClass, so, yay, failing tests revealed a bug. All green now, so let's merge.