Forgotten in #5039, change statuses_tags tag_id to bigint (#5070)

db/migrate/20170924022025_ids_to_bigints2.rb

@@ -0,0 +1,9 @@
+class IdsToBigints2 < ActiveRecord::Migration[5.1]
+  def up
+    change_column :statuses_tags, :tag_id, :bigint
+  end
+
+  def down
+    change_column :statuses_tags, :tag_id, :integer
+  end
+end