Update t3olayout and fix 500 error in ajax login

composer.lock

@@ -3024,7 +3024,7 @@
             "source": {
                 "type": "git",
                 "url": "https://git-t3o.typo3.org/t3o/t3olayout.git",
-                "reference": "cb6fe72d9e1fcc6109271966a90d0b39e6cd6e7d"
+                "reference": "fe454a8b1a1b76441c4dee829183cdb893306c34"
             },
             "require": {
                 "causal/ig_ldap_sso_auth": "^3.4",
@@ -3073,7 +3073,7 @@
             "keywords": [
                 "TYPO3 CMS"
             ],
-            "time": "2019-05-20T14:19:50+00:00"
+            "time": "2019-05-21T15:17:21+00:00"
         },
         {
             "name": "t3o/t3omy",