Add ability to toggle CFP and ticket sales

app/config/sculpin_site.yml

@@ -1,5 +1,11 @@
 title: DrupalCamp Bristol 2019
 
+date: 2019-07-28
+
+cfp:
+    open: true
+    url: '%papercall.url%'
+
 eventbrite:
     url: https://www.eventbrite.co.uk/e/drupalcamp-bristol-2019-tickets-58986869314
 
@@ -10,11 +16,18 @@ main_menu:
     - title: Tickets
       url: '%eventbrite.url%'
       pattern: ~
+      enabled: '%tickets.available%'
 
     - title: Submit a session
       url: '%papercall.url%'
       pattern: ~
+      enabled: '%cfp.open%'
 
     - title: Sponsor us
       url: /sponsor-us
       pattern: /^\/sponsor-us\/?/
+      enabled: true
+
+tickets:
+    available: true
+    url: '%eventbrite.url%'