Backport translations to stable branches

[juliusknorr]

Should fix #2231

Based on https://github.com/nextcloud/docker-ci/blob/master/translations-app/handleAppTranslations.sh#L17-L19

• Drop this file once stable4 branch is no longer supported as we can use the default stable* then
• Document the backport behaviour for app developers

[juliusknorr]

Manually triggered and pushed now to all stable branches 🎉

[juliusknorr]

Awesome seems we actually have that documented 4 days ago nextcloud/documentation#8324

[Jerome-Herbinet]

Hello @juliushaertl thank your for all this.
Do you think it's possible to backport it to NC 23 ?
Best regards,
Jérôme

[Raudius]

@Jerome-Herbinet

I am not sure that backporting this would do anything since it looks like the translations are coming through to the stable23/stable24 branches already:

8d62155

[Jerome-Herbinet]

@Raudius
In fact, I just checked the rendering of the loading screen on two instances (NC23 and NC24 with Collabora up to date) and the screen is displayed in French only under NC24 ("Chargement"), while under NC23, we still have a screen written in English ("Loading"). The problem was initialy described in the #2231 issue. Do you understand what can happen ? Thank you for your help in helping me understand things better as a non-developer :-)

[Raudius]

@Jerome-Herbinet

Some details: this PR makes some changes to signal to the translation updater to also push the translation changes to older versions (24, 23...)

However the translation bot does seem to be extracting translation strings from the older versions (so the master branch translations are used). It turned out the stable23 "Loading" string was missing a space (compared to the master branch)

I have addressed this issue in this PR: #2338

[Jerome-Herbinet]

Thank you very much for your explanation @Raudius