Fixed some i18n markup on date error messages. Thanks, Bastian Kleineidam. Refs

#3069.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@4702 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/validators.py

@@ -140,7 +140,8 @@ def _isValidDate(date_string):
     try:
         date(year, month, day)
     except ValueError, e:
-        raise ValidationError, gettext('Invalid date: %s.' % e)    
+        msg = gettext('Invalid date: %s') % gettext(str(e))
+        raise ValidationError, msg    
 
 def isValidANSIDate(field_data, all_data):
     if not ansi_date_re.search(field_data):