Add structured errors to schema

db/migrate/20170703080205_create_structured_errors.rb

@@ -0,0 +1,10 @@
+class CreateStructuredErrors < ActiveRecord::Migration
+  def change
+    create_table :structured_errors do |t|
+      t.references :error_template
+      t.belongs_to :file
+
+      t.timestamps null: false
+    end
+  end
+end