feat(about): improve about page with real data and support section

- Replace example imprint data with real contact information
- Add support/donation section with SEPA, PayPal, and Steady options
- Add GEMA tariff tracking requirement note to privacy section
- Remove iframe embedding of Google Sheets, keep link only
- Remove empty lines from imprint section
- Add 'curated' to project description (DE/EN)
- Fix XML tag syntax for Google Sheets link

messages/en.json

@@ -156,25 +156,35 @@
     "title": "About Hördle & Imprint",
     "intro": "Hördle is a non-commercial, privately run hobby project. There are no ads, no sponsored content and no hidden subscription models.",
     "projectTitle": "About this project",
-    "projectPrivateNote": "Hördle is developed, operated and financed privately in the creator's spare time. There is no guarantee for permanent availability or completeness.",
+    "projectPrivateNote": "Hördle is developed, operated, curated and financed privately in the creator's spare time. There is no guarantee for permanent availability or completeness.",
     "projectIdea": "The idea behind Hördle is to (re)discover music in a playful way – inspired by Wordle, but for music lovers.",
-    "imprintTitle": "Imprint (example data)",
+    "imprintTitle": "Imprint",
     "imprintOperator": "Responsible for the content of this site (provider under German law):",
     "imprintCountry": "Germany",
     "imprintEmailLabel": "Email:",
-    "imprintDisclaimer": "Note: This information is example data only and does not constitute legal advice. For a legally compliant imprint you should consult a legal professional.",
+    "imprintDisclaimer": "Note: This information is current as of the date indicated. For legal questions you should consult a legal professional.",
     "costsTitle": "Ongoing costs of the project",
     "costsIntro": "Even though Hördle is a private project, there are ongoing costs for running it, for example:",
     "costsDomain": "Domains (e.g. hördle.de / hoerdle.de)",
     "costsServer": "Servers / vServers for the app and tracking",
     "costsEmail": "Email hosting",
     "costsLicenses": "Possible fees for copyrights or other licenses",
-    "costsSheetLinkText": "You can find a detailed, continuously updated overview of the current costs in this {link}Google Sheet{linkEnd}.",
+    "costsSheetLinkText": "You can find a detailed, continuously updated overview of the current costs in this <link>Google Sheet</link>.",
     "costsSheetPrivacyNote": "When accessing or embedding the Google Sheet, data (e.g. your IP address) may be transmitted to Google. If you don't want that, please do not open the sheet.",
+    "supportTitle": "Support Hördle",
+    "supportIntro": "Hördle is a non-commercial project that needs to be financed by ongoing costs. If you would like to support the project financially, here are the options:",
+    "supportSepaTitle": "SEPA Bank Transfer (preferred)",
+    "supportSepaName": "Markus Busche",
+    "supportSepaIban": "IBAN: DE28500310001071584000",
+    "supportPaypalTitle": "PayPal Donation",
+    "supportPaypalLink": "paypal.me/MBusche",
+    "supportSteadyTitle": "Steady",
+    "supportSteadyDescription": "Regular support via Steady",
     "privacyTitle": "Privacy",
     "privacyIntro": "Protecting your privacy matters. This project aims to collect as little data as possible.",
     "privacyPlausibleTitle": "Self-hosted Plausible Analytics",
     "privacyPlausibleSelfHosted": "For anonymous usage statistics, Plausible Analytics is used on a self-hosted server. No personal profiles are created.",
+    "privacyPlausibleGemaTariff": "Tracking is required to determine the appropriate GEMA tariff.",
     "privacyPlausibleNoCookies": "No cookies are set for analytics purposes.",
     "privacyPlausibleNoTrackingAcrossSites": "There is no tracking across multiple websites or devices.",
     "privacyPlausibleAggregated": "Analytics are only performed in aggregated form (e.g. page views, browsers used).",