Add simple web hooks to procedures

db/migrate/20180301123826_add_webhook_to_procedures.rb

@@ -0,0 +1,5 @@
+class AddWebhookToProcedures < ActiveRecord::Migration[5.2]
+  def change
+    add_column :procedures, :web_hook_url, :string
+  end
+end

db/schema.rb

@@ -453,6 +453,7 @@ ActiveRecord::Schema.define(version: 2018_04_04_113409) do
     t.datetime "archived_at"
     t.datetime "whitelisted_at"
     t.boolean "ask_birthday", default: false, null: false
+    t.string "web_hook_url"
     t.index ["hidden_at"], name: "index_procedures_on_hidden_at"
   end