[Draft] Python 3.6 Upgrade / AMO Rebase

[MelissaAutumn]

Initial rebase of AMO (tag:2019.02.28) to ATN master:

• Don't generate Firefox/Android addons for local dev
• Set Thunderbird as the default app
• Only enable Firefox/Android if in tests
• Add auth bypass for development
• Adjusted legacy extension upload message for ATN
• Add contextmanager function to hack around test fixtures and addons-linter woes
• Update ci workflow
• Lots of test fixes

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This is a rebase up to the 2019.02.28 tag on AMO, right before they removed the django front-end. It's probably a good base to then upgrade as we need it. Tests are currently failing due to some category shenanigans (overlapping ids, changed ids, etc...) and some other minor issues. But the only thing failing on the web-side is the addon upload (due to the category issue.)

I'm sure there were Thunderbird specific tweaks I'll have to go back and fix though.

[github-actions]

Python 3.6 Test Results

5 500 tests   5 322 ✅  21m 27s ⏱️
    1 suites     35 💤
    1 files      143 ❌

For more details on these failures, see this check.

Results for commit 9e85106.

♻️ This comment has been updated with latest results.

[MelissaAutumn]

Setup instructions:

Note: that I can only get this working on linux/amd64 machines. Even with emulation arm macbooks have failed.

0. Setup /etc/hosts with:
   127.0.0.1 olympia.test

1. Build containers (note that depending on docker install you may need sudo):
   docker-compose up --build -V

2. Once everything is built and running you can initialize the db with (again note the potential sudo requirement):
   make initialize_docker

3. Once that's setup go to http://olympia.test:8000.

For logging in you'll need either the fxa keys or to apply this patch: https://github.com/MelissaAutumn/atn-docker/blob/main/patches/login_override.patch (I'm unsure if it will cleanly apply on this branch, but it's a couple of lines so you can copy and paste it.) This patch will override the login button to log you into the super user you created during initialize_docker. It's for testing purposes only.

For testing you can pull down the extension example repo: https://github.com/thunderbird/webext-examples and zip up an extension of your choice (v3/mailtabs is a good one.) Make sure to zip up the contents of the folder not the mailtabs folder itself. Rename the zip file to extension.xpi and try uploading it on your local ATN.

I don't remember if the auto approval cron is active in docker, but if not you can "review" it with your super user access. (Under Tools > Review on the website.)