Remove the language column if all the columns have the site's default language

silvi.addweb → made their first commit to this issue’s fork.

I've tested this patch and it's working fine for me.

bkosborne → changed the visibility of the branch 8.x-2.x to hidden.

Hid the patch, and incorporated it into a merge request. I also hid one of the existing branches from the fork.

This looks good, but needs tests.

I am OK with the idea of simplifying the UI, but this controller is getting more and more convoluted to make everyone happy :)
After ✨ Differentiate pending/old revisions and default translations Active , there's more code dealing with these rows/columns, so we'll want to make sure we have tests that cover all possible scenarios.