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

frontend/node_modules/json5/lib/register.js

@@ -1,13 +0,0 @@
-const fs = require('fs')
-const JSON5 = require('./')
-
-// eslint-disable-next-line node/no-deprecated-api
-require.extensions['.json5'] = function (module, filename) {
-    const content = fs.readFileSync(filename, 'utf8')
-    try {
-        module.exports = JSON5.parse(content)
-    } catch (err) {
-        err.message = filename + ': ' + err.message
-        throw err
-    }
-}