[fix #1097] Add whitelist mechanisme to procedure

db/migrate/20180105152235_add_whitelisted_at_column_to_procedure.rb

@@ -0,0 +1,5 @@
+class AddWhitelistedAtColumnToProcedure < ActiveRecord::Migration[5.0]
+  def change
+    add_column :procedures, :whitelisted_at, :datetime
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20171214155554) do
+ActiveRecord::Schema.define(version: 20180105152235) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -424,6 +424,7 @@ ActiveRecord::Schema.define(version: 20171214155554) do
     t.datetime "published_at"
     t.datetime "hidden_at"
     t.datetime "archived_at"
+    t.datetime "whitelisted_at"
     t.index ["hidden_at"], name: "index_procedures_on_hidden_at", using: :btree
   end