Fixed user avatar display when gravatar use is disabled

rhodecode/lib/helpers.py

@@ -456,7 +456,7 b' HasRepoPermissionAny, HasRepoPermissionA'
 def gravatar_url(email_address, size=30):
     if not str2bool(config['app_conf'].get('use_gravatar')) or \
         email_address == '[e-mail]':
-        return "/images/user%s.png" % size
+        return url("/images/user%s.png" % size)
 
     ssl_enabled = 'https' == request.environ.get('wsgi.url_scheme')
     default = 'identicon'