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

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

@@ -1,20 +0,0 @@
-var test = require('tape');
-var stringify = require('../');
-
-test('toJSON function', function (t) {
-    t.plan(1);
-    var obj = { one: 1, two: 2, toJSON: function() { return { one: 1 }; } };
-    t.equal(stringify(obj), '{"one":1}' );
-});
-
-test('toJSON returns string', function (t) {
-	t.plan(1);
-	var obj = { one: 1, two: 2, toJSON: function() { return 'one'; } };
-	t.equal(stringify(obj), '"one"');
-});
-
-test('toJSON returns array', function (t) {
-	t.plan(1);
-	var obj = { one: 1, two: 2, toJSON: function() { return ['one']; } };
-	t.equal(stringify(obj), '["one"]');
-});