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

frontend/node_modules/classnames/bind.js

@@ -1,77 +0,0 @@
-/*!
-	Copyright (c) 2018 Jed Watson.
-	Licensed under the MIT License (MIT), see
-	http://jedwatson.github.io/classnames
-*/
-/* global define */
-
-(function () {
-	'use strict';
-
-	var hasOwn = {}.hasOwnProperty;
-
-	function classNames () {
-		var classes = '';
-
-		for (var i = 0; i < arguments.length; i++) {
-			var arg = arguments[i];
-			if (arg) {
-				classes = appendClass(classes, parseValue.call(this, arg));
-			}
-		}
-
-		return classes;
-	}
-
-	function parseValue (arg) {
-		if (typeof arg === 'string' || typeof arg === 'number') {
-			return this && this[arg] || arg;
-		}
-
-		if (typeof arg !== 'object') {
-			return '';
-		}
-
-		if (Array.isArray(arg)) {
-			return classNames.apply(this, arg);
-		}
-
-		if (arg.toString !== Object.prototype.toString && !arg.toString.toString().includes('[native code]')) {
-			return arg.toString();
-		}
-
-		var classes = '';
-
-		for (var key in arg) {
-			if (hasOwn.call(arg, key) && arg[key]) {
-				classes = appendClass(classes, this && this[key] || key);
-			}
-		}
-
-		return classes;
-	}
-
-	function appendClass (value, newClass) {
-		if (!newClass) {
-			return value;
-		}
-	
-		if (value) {
-			return value + ' ' + newClass;
-		}
-	
-		return value + newClass;
-	}
-
-	if (typeof module !== 'undefined' && module.exports) {
-		classNames.default = classNames;
-		module.exports = classNames;
-	} else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
-		// register as 'classnames', consistent with npm package name
-		define('classnames', [], function () {
-			return classNames;
-		});
-	} else {
-		window.classNames = classNames;
-	}
-}());