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

frontend/node_modules/yaml/dist/schema/yaml-1.1/schema.js

@@ -1,41 +0,0 @@
-'use strict';
-
-var map = require('../common/map.js');
-var _null = require('../common/null.js');
-var seq = require('../common/seq.js');
-var string = require('../common/string.js');
-var binary = require('./binary.js');
-var bool = require('./bool.js');
-var float = require('./float.js');
-var int = require('./int.js');
-var merge = require('./merge.js');
-var omap = require('./omap.js');
-var pairs = require('./pairs.js');
-var set = require('./set.js');
-var timestamp = require('./timestamp.js');
-
-const schema = [
-    map.map,
-    seq.seq,
-    string.string,
-    _null.nullTag,
-    bool.trueTag,
-    bool.falseTag,
-    int.intBin,
-    int.intOct,
-    int.int,
-    int.intHex,
-    float.floatNaN,
-    float.floatExp,
-    float.float,
-    binary.binary,
-    merge.merge,
-    omap.omap,
-    pairs.pairs,
-    set.set,
-    timestamp.intTime,
-    timestamp.floatTime,
-    timestamp.timestamp
-];
-
-exports.schema = schema;