Add yet-another-react-lightbox package and update .gitignore to exclude node_modules

frontend/node_modules/graceful-fs/clone.js

@@ -1,23 +0,0 @@
-'use strict'
-
-module.exports = clone
-
-var getPrototypeOf = Object.getPrototypeOf || function (obj) {
-  return obj.__proto__
-}
-
-function clone (obj) {
-  if (obj === null || typeof obj !== 'object')
-    return obj
-
-  if (obj instanceof Object)
-    var copy = { __proto__: getPrototypeOf(obj) }
-  else
-    var copy = Object.create(null)
-
-  Object.getOwnPropertyNames(obj).forEach(function (key) {
-    Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
-  })
-
-  return copy
-}