Update schema to reflect re-usable error_template_attributes, descriptions, hints, and sorting

db/migrate/20170711170456_add_description_and_hint_to_error_template.rb

@@ -0,0 +1,9 @@
+class AddDescriptionAndHintToErrorTemplate < ActiveRecord::Migration
+  def change
+    add_column :error_templates, :description, :text
+    add_column :error_templates, :hint, :text
+
+    add_column :error_template_attributes, :description, :text
+    add_column :error_template_attributes, :important, :boolean
+  end
+end

db/migrate/20170711170928_change_error_template_attribute_relationship_to_n_to_m.rb

@@ -0,0 +1,6 @@
+class ChangeErrorTemplateAttributeRelationshipToNToM < ActiveRecord::Migration
+  def change
+    remove_belongs_to :error_template_attributes, :error_template
+    create_join_table :error_templates, :error_template_attributes
+  end
+end