Add Media kit & Branding page

[keunes]

And publish the first press release.

Note: This PR doesn't (yet) update the GH actions required for translations. A separate PR will be required.

[keunes]

GH build fails - as does Netlify. Both have the same issue:

Building site for language: "en" to: /home/runner/work/antennapod.github.io/antennapod.github.io/_site
Loading translation from file /home/runner/work/antennapod.github.io/antennapod.github.io/_i18n/en.yml
Missing i18n key: en:<p class="lead">Tuesday 9 May 2023 – The new 3.0 release of the free and ad-free podcast app for Android ‘AntennaPod’ introduces a Home screen, giving users an overview of the most important sections and content in the app. This new version will land in users’ hands with a refreshed icon and interface. The updated app is available for download on Google Play and F-Droid from today.</p>
  Liquid Exception: no implicit conversion of nil into String in /home/runner/work/antennapod.github.io/antennapod.github.io/_layouts/internal.html
                    ------------------------------------------------
      Jekyll 4.3.1   Please append `--trace` to the `build` command 
                     for any additional information or backtrace. 
                    ------------------------------------------------

I don't really understand, though. There are no translations for the whole file - _i18n/en/press-releases/2023-05-08-version-3.md exists only in English. That's not an issue for other files without translation. Maybe the {: .lead} tag is throwing something off?

[ByteHamster]

Sounds like something is trying to translate the already translated blog post title again. I don't know what .lead does.

[keunes]

I don't know what .lead does.

It applies the (lead) class to the element (paragraph) that follows.