Fix contest creation

app/views/layouts/authenticated.html.slim

@@ -44,7 +44,7 @@ html
               = msg
 
       h1.mb-4
-        - if @contest
+        - if @contest && @contest.id.present?
           = @contest.name
           - if active_page("/public") == "active" && @action_path
             a.ms-4.btn.btn-primary href=@action_path style="margin-top: -6px"
@@ -52,7 +52,7 @@ html
         - else
           = @title
 
-      - if @contest && active_page("/public") != "active"
+      - if @contest && active_page("/public") != "active" && active_page("/contests/new") != "active" && active_page("/contests/create") != "active" && active_page("/contests") == "active"
         = render "contest_nav"
 
       = yield