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

frontend/node_modules/react-dropzone/examples/no-jsx/README.md

@@ -1,32 +0,0 @@
-If you'd like to use [react without JSX](https://reactjs.org/docs/react-without-jsx.html) you can:
-
-```js harmony
-import React, {useCallback, useState} from 'react';
-import {useDropzone} from 'react-dropzone';
-
-const e = React.createElement
-
-function Basic () {
-  const [files, setFiles] = useState([]);
-  const onDrop = useCallback(files => setFiles(files), [setFiles]);
-
-  const {getRootProps, getInputProps} = useDropzone({onDrop});
-
-  const fileList = files.map(
-    file => React.createElement('li', {key: file.name}, `${file.name} - ${file.size} bytes`)
-  );
-
-  return e('section', {className: 'container'}, [
-    e('div', getRootProps({className: 'dropzone', key: 'dropzone'}), [
-      e('input', getInputProps({key: 'input'})),
-      e('p', {key: 'desc'}, "Drag 'n' drop some files here, or click to select files")
-    ]),
-    e('aside', {key: 'filesContainer'}, [
-      e('h4', {key: 'title'}, 'Files'),
-      e('ul', {key: 'fileList'}, fileList)
-    ])
-  ]);
-}
-
-Basic()
-```