feat: Optional full-width toggle for document display (#2869)

* Migration, model, presenter

* Working implementation

* fix: Account for table of contents

* Checkbox -> Toggle

* Checkbox -> Toggle

server/migrations/20211218193004-documents-full-width.js

@@ -0,0 +1,14 @@
+"use strict";
+
+module.exports = {
+  up: async (queryInterface, Sequelize) => {
+    await queryInterface.addColumn("documents", "fullWidth", {
+      type: Sequelize.BOOLEAN,
+      defaultValue: false,
+      allowNull: false,
+    });
+  },
+  down: async (queryInterface, Sequelize) => {
+    await queryInterface.removeColumn("documents", "fullWidth");
+  },
+};