Forbid the use of the Classic Jenkins Job creation UI

Fixes #10

nginx.master.conf

@@ -11,6 +11,12 @@ server {
         return 301 /blue/pipelines;
     }
 
+    # Only allow the usage of the Blue Ocean Pipeline creation flow.
+    # https://github.com/CodeValet/codevalet/issues/10
+    location = /newJob {
+        return 301 /blue/organizations/jenkins/create-pipeline;
+    }
+
     location / {
         proxy_redirect off;
         proxy_set_header Host $http_host;