Update newsletter/firefox page (issue #15075)

[alexgibson]

One-line summary

Important

This needs to be live before Monday 16th Sept

• Updates the /newsletter/firefox/ page with simplified layout and new copy.
• Adds A/B header image test for en-US, de, and fr languages.

Issue / Bugzilla link

#15075

Testing

Version A (fox tail image):

http://localhost:8000/en-US/newsletter/firefox/?v=1 (en-US)
http://localhost:8000/en-GB/newsletter/firefox/ (en-GB)
http://localhost:8000/de/newsletter/firefox/?v=1 (de)
http://localhost:8000/fr/newsletter/firefox/?v=1 (fr)
http://localhost:8000/es-ES/newsletter/firefox/ (es-ES)
http://localhost:8000/it/newsletter/firefox/ (it)
http://localhost:8000/nl/newsletter/firefox/ (nl)
http://localhost:8000/pl/newsletter/firefox/ (pl)
http://localhost:8000/el/newsletter/firefox/ (other locales with fallback copy)

Version B (alternate images):

http://localhost:8000/en-US/newsletter/firefox/?v=2 (en-US)
http://localhost:8000/de/newsletter/firefox/?v=2 (de)
http://localhost:8000/fr/newsletter/firefox/?v=2 (fr)

Experiment URL:

http://localhost:8000/en-US/newsletter/firefox/

• Redirects to experiment variation for en-US, de, and fr (test with DNT/GPC disabled)

[stephaniehobson]

We've changed how we record experiment data for GA4, please update to use the new syntax. (also, if you copy and pasted this code from somewhere, we should file an issue to update that too).

Also, there was a problem getting it running locally for me. Not sure if it was me or if you'll see it to if you stop and then re-start your dev server.

Oh... and it needs a rebase ;)

[stephaniehobson]

Issue: I the error NameError: name 'VariationTemplateView' is not defined when I try to start bedrock.

I fixed it by adding from bedrock.utils.views import VariationTemplateView to this file so I could do the review. I'm not sure I am doing something wrong or if that is actually necessary. Thoughts?

[alexgibson]

Ah, looks like the line was removed in https://github.com/mozilla/bedrock/pull/15119/files#diff-05181ef311764e79e4e0f540afdb3d341a0294fed3347b5c4386a810b73c0783

I'll rebase and add it back here, thanks!

[alexgibson]

@stephaniehobson updated thanks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.83%. Comparing base (6fa3b0e) to head (1377242).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #15101   +/-   ##
=======================================
  Coverage   77.83%   77.83%           
=======================================
  Files         162      162           
  Lines        8458     8459    +1     
=======================================
+ Hits         6583     6584    +1     
  Misses       1875     1875           

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[stephaniehobson]

R+ 🦊