Add Czech (cs) locale

[MikkCZ]

No description provided.

[xabolcs]

Please be patient, looks like this will only merged when webextension port (#235) is ready.

Thanks for contributing!

[MikkCZ]

The l10n format will be probably different there, right? I have also created a PR for kyoshino/nightlyttr#1, with the translations in messages.json format.

[xabolcs]

I saw that! Thanks!

Unsure all about that! Let be webextension first!

[kyoshino]

So #245 is now merged, but I had to remove your cs locale file added in kyoshino/nightlyttr#1 as per @whimboo's request because it's a new locale. Would you mind adding your locale using this PR? You just need to add extension/_locales/cs/messages.json again, replace XUL with Gecko and remove Redux from the extension name in that file. Thanks a lot!

[MikkCZ]

@kyoshino sorry it took me the whole week. I have updated the PR.

[whimboo]

Thanks a lot for the update! I will merge your PR now.