Add Polish (pl) locale

[Gelip]

How add polish locale. I added polish files in-prefs.dtd and in-prefs.properties to the pl subfolder in .xpi archive but it doesn't work even after turning off the signature checking: xpinstall.signatures.required false
I attach polish interface files:
pl.zip

[nohamelin]

Hi,
Which version, or build, of Firefox are you using? Note this add-on can't run in recent official Firefox releases, even turning off the signature checking: the support to run old XUL add-ons is simply missing; there is no way around it.

Your comment reminded me that I need to mark this repo as archived...

[Gelip]

Which version, or build, of Firefox are you using?

I am using Firefox 52.9.0 ESR and firefox-45.9.11-20180916-ca29a3ea9-win32-sse.7z on an old PC.

[nohamelin]

The locale's resources need to be registered in the chrome.manifest and install.rdf files too, to work.

I merged the latest add-on build with your translation. GitHub doesn't allow me attach XPI files here so I added it for now as a new asset to the release, give it a try:
XMLSearchEnginesExporterImporter-0.4+Polish.xpi

[Gelip]

I added it for now as a new asset to the release

Thank you very much. It works :-)

P.S. Is making a signed version a big problem?

[nohamelin]

P.S. Is making a signed version a big problem?

Signing for public releases was done by Mozilla but they removed all the support to work with XUL add-ons from addons.mozilla.org