Show link to privacy declaration at the auth screen

Change-Id: If487e9e5171f9956260f24308bd824ce82c211dd

Author: awesome-michael

src/components/views/auth/VectorAuthFooter.js

@@ -43,6 +43,7 @@ const VectorAuthFooter = () => {
     return (
         <div className="mx_AuthFooter">
             {authFooterLinks}
+            <a href="https://amp.chat/privacy" target="_blank" rel="noopener">{ _t('Privacy') }</a>
             <a href="https://matrix.org" target="_blank" rel="noopener">{ _t('powered by Matrix') }</a>
         </div>
     );

src/i18n/strings/de_DE.json

@@ -48,5 +48,6 @@
     "Your Riot is misconfigured": "Dein AMP.chat ist falsch konfiguriert",
     "Your Riot configuration contains invalid JSON. Please correct the problem and reload the page.": "Deine AMP.chat Konfiguration enthält ungültiges JSON. Bitte korrigiere das Problem und lade die Seite neu.",
     "The message from the parser is: %(message)s": "Die Nachricht des Parsers ist: %(message)s",
-    "Invalid JSON": "Ungültiges JSON"
+    "Invalid JSON": "Ungültiges JSON",
+    "Privacy": "Datenschutz"
 }

src/i18n/strings/en_EN.json

@@ -27,6 +27,7 @@
     "Welcome to AMP.chat": "Welcome to AMP.chat",
     "The secure messenger for healthcare industry": "The secure messenger for healthcare industry",
     "Chat with AMP Bot": "Chat with AMP Bot",
-    "AMP.chat on %(platformName)s": "AMP.chat on %(platformName)s"
+    "AMP.chat on %(platformName)s": "AMP.chat on %(platformName)s",
+    "Privacy": "Privacy"
 
 }