Add 5 new languages to exampleSite: German, French, Spanish, Portuguese

Add complete translations for:
- German (de)
- French (fr)
- Spanish (es)
- Portuguese Brazil (pt-br)
- Portuguese Portugal (pt-pt)

Changes include:
- Language config files (languages.*.toml)
- Menu config files (menus.*.toml)
- Translated docs section (16 files x 5 langs)
- Translated homepage, guides, samples
- Translated examples, authors, tags sections
- Translated users section (112 dirs x 5 langs)
- Fixed YAML front matter formatting in user files

Hugo build now supports 9 languages total.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

exampleSite/content/users/_index.de.md

@@ -0,0 +1,26 @@
+---
+title: "Benutzer"
+draft: false
+description: "Einige Blowfish-Beispiele aus der Praxis."
+slug: "users"
+tags: ["benutzer", "beispiel"]
+showDate: false
+showAuthor: false
+showReadingTime: false
+showEdit: false
+layoutBackgroundHeaderSpace: false
+cardViewScreenWidth: false
+---
+
+
+
+Echte Websites, die mit Blowfish erstellt wurden. Die vollständige Liste im [JSON-Format](/users/users.json) anzeigen.
+
+
+{{< alert >}}
+
+**Blowfish-Benutzer?** Um Ihre Website zu dieser Liste hinzuzufügen, [reichen Sie einen Pull Request ein](https://github.com/nunocoracao/blowfish/blob/dev/exampleSite/content/users/users.json).
+
+{{</ alert >}}
+
+</BR>