Add missing auth translations and update components to use i18n keys

- Added new translation keys to de/auth.js:
  - resetPassword section (title, button, success, invalidToken, error, emailSent, emailError)
  - errors section (fillAllFields, invalidEmail, passwordsNotMatch, passwordsNotMatchShort, enterEmail, loginFailed, registerFailed, googleLoginFailed, emailExists)
  - success section (registerComplete)
  - newPassword, backToHome keys

- Updated ResetPassword.js to use translation keys instead of hardcoded German strings
- Updated LoginComponent.js to use translation keys instead of hardcoded German strings
- translate-i18n.js generated translations for other languages

src/pages/ResetPassword.js

@@ -30,28 +30,28 @@ const ResetPassword = () => {
     const tokenFromUrl = urlParams.get('token');
     
     if (!tokenFromUrl) {
-      setError('Kein gültiger Token gefunden. Bitte verwenden Sie den Link aus Ihrer E-Mail.');
+      setError(t('auth.resetPassword.invalidToken'));
     } else {
       setToken(tokenFromUrl);
     }
-  }, [location]);
+  }, [location, t]);
 
   const handleSubmit = (e) => {
     e.preventDefault();
     
     // Validation
     if (!newPassword || !confirmPassword) {
-      setError('Bitte füllen Sie alle Felder aus');
+      setError(t('auth.errors.fillAllFields'));
       return;
     }
 
     if (newPassword.length < 8) {
-      setError('Das Passwort muss mindestens 8 Zeichen lang sein');
+      setError(t('auth.passwordMinLength'));
       return;
     }
 
     if (newPassword !== confirmPassword) {
-      setError('Die Passwörter stimmen nicht überein');
+      setError(t('auth.errors.passwordsNotMatch'));
       return;
     }
 
@@ -76,7 +76,7 @@ const ResetPassword = () => {
           }
         }, 3000);
       } else {
-        setError(response.message || 'Fehler beim Zurücksetzen des Passworts');
+        setError(response.message || t('auth.resetPassword.error'));
       }
     });
   };
@@ -87,7 +87,7 @@ const ResetPassword = () => {
         <Box sx={{ display: 'flex', flexDirection: 'column', alignItems: 'center' }}>
           <LockResetIcon sx={{ fontSize: 48, color: 'primary.main', mb: 2 }} />
           <Typography component="h1" variant="h5" gutterBottom>
-            Passwort zurücksetzen
+            {t('auth.resetPassword.title')}
           </Typography>
           
           {!token ? (
@@ -97,7 +97,7 @@ const ResetPassword = () => {
           ) : success ? (
             <Box sx={{ width: '100%', mt: 2 }}>
               <Alert severity="success" sx={{ mb: 2 }}>
-                Ihr Passwort wurde erfolgreich zurückgesetzt! Sie werden in Kürze zur Anmeldung weitergeleitet...
+                {t('auth.resetPassword.success')}
               </Alert>
               <Box sx={{ display: 'flex', justifyContent: 'center' }}>
                 <CircularProgress size={24} />
@@ -116,7 +116,7 @@ const ResetPassword = () => {
                 required
                 fullWidth
                 name="newPassword"
-                label="Neues Passwort"
+                label={t('auth.newPassword')}
                 type="password"
                 id="newPassword"
                 autoComplete="new-password"
@@ -130,7 +130,7 @@ const ResetPassword = () => {
                 required
                 fullWidth
                 name="confirmPassword"
-                label={t ? t('auth.confirmPassword') : 'Passwort bestätigen'}
+                label={t('auth.confirmPassword')}
                 type="password"
                 id="confirmPassword"
                 autoComplete="new-password"
@@ -154,7 +154,7 @@ const ResetPassword = () => {
                 {loading ? (
                   <CircularProgress size={24} color="inherit" />
                 ) : (
-                  'Passwort zurücksetzen'
+                  t('auth.resetPassword.button')
                 )}
               </Button>
               
@@ -164,7 +164,7 @@ const ResetPassword = () => {
                   onClick={() => navigate('/')}
                   sx={{ color: '#2e7d32' }}
                 >
-                  Zurück zur Startseite
+                  {t('auth.backToHome')}
                 </Button>
               </Box>
             </Box>