[ignore] Test issue for "Objectify the language negotiation system"

Some cleanups

Another fix

6: language-oo-2156425-6.patch queued for re-testing.

Another easy fix.

While fixing tests I found #2157945: Deprecate format_size() and use Drupal\Core\StringTranslation\ByteSizeMarkup instead.

This fixes language services instantiation: now all the language-negotiation-related code is loaded only on multilingual sites.

More clean-up. Let's see how it behaves.

Let's try this.

This should fix the last failures.

And this cleans up language types. Once this is green we should be ready for review.

This should fix quite some failures.

Moved language type info on the configurable LM and adjusted docs accordingly.

28: language-oo-2156425-28.patch queued for re-testing.

No test failures here.

Moved the last stuff onto the language manager. Let's whether we can get rid of that failure.

bot?

Finally green?

#37 is actually green: the failure is unrelated and the test is passing on my machine. Posting a new patch with a potential improvement.

Hopefully we no longer need this.