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

frontend/node_modules/json-stable-stringify-without-jsonify/test/str.js

@@ -1,32 +0,0 @@
-var test = require('tape');
-var stringify = require('../');
-
-test('simple object', function (t) {
-    t.plan(1);
-    var obj = { c: 6, b: [4,5], a: 3, z: null };
-    t.equal(stringify(obj), '{"a":3,"b":[4,5],"c":6,"z":null}');
-});
-
-test('object with undefined', function (t) {
-	t.plan(1);
-	var obj = { a: 3, z: undefined };
-	t.equal(stringify(obj), '{"a":3}');
-});
-
-test('array with undefined', function (t) {
-	t.plan(1);
-	var obj = [4, undefined, 6];
-	t.equal(stringify(obj), '[4,null,6]');
-});
-
-test('object with empty string', function (t) {
-	t.plan(1);
-	var obj = { a: 3, z: '' };
-	t.equal(stringify(obj), '{"a":3,"z":""}');
-});
-
-test('array with empty string', function (t) {
-	t.plan(1);
-	var obj = [4, '', 6];
-	t.equal(stringify(obj), '[4,"",6]');
-});