Merge branch 'master' into refactor-messages

# Conflicts:
#	db/structure.sql

db/migrate/20180808064402_add_registry_lock_time_column.rb

@@ -0,0 +1,7 @@
+class AddRegistryLockTimeColumn < ActiveRecord::Migration
+  def change
+    change_table(:domains) do |t|
+      t.column :locked_by_registrant_at, :datetime, null: true
+    end
+  end
+end

db/migrate/20180824092855_change_domain_pending_json_to_jsonb.rb

@@ -0,0 +1,9 @@
+class ChangeDomainPendingJsonToJsonb < ActiveRecord::Migration
+  def up
+    change_column :domains, :pending_json, 'jsonb USING CAST(pending_json AS jsonb)'
+  end
+
+  def down
+    change_column :domains, :pending_json, 'json USING CAST(pending_json AS json)'
+  end
+end