feat(seo, i18n): update SEO metadata and enhance localization across multiple languages

- Revised SEO titles and descriptions for improved clarity and relevance, emphasizing the platform's features such as community, chat, forums, and browser games.
- Updated localization files for Cebuano, German, English, Spanish, and French to include new translations and enhance existing content, ensuring a consistent user experience across languages.
- Added a new story teaser in the home view to better highlight the platform's offerings without requiring downloads.

frontend/src/i18n/locales/en/home.json

@@ -56,6 +56,7 @@
             "welcome": "Welcome to yourPart",
             "description": "yourPart is a social network where you can make friends and meet new people. You can share your images and control who sees what. You can also exchange messages and chat – in large public rooms or in the small random chat. And, of course, you can cam as well.",
             "introHtml": "YourPart is a growing platform combining community features, real‑time chat, forums, a social network with photo gallery, and the city‑builder game <em>Falukant</em>. The site is currently in beta – we continuously expand features, content and stability.",
+            "storyTeaser": "YourPart combines an <strong>online community</strong>, real‑time chat, forums, blogs, a <strong>free vocabulary trainer</strong> and <strong>browser games</strong>—including the medieval economy builder <em>Falukant</em>—in one place, <strong>no download required</strong>. Focus: social exchange, depth and a growing product world.",
             "expected": {
                 "title": "What to expect",
                 "items": {