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

frontend/node_modules/react-dropzone/typings/tests/refs.tsx

@@ -1,18 +0,0 @@
-import React, { createRef } from "react";
-import Dropzone, { DropzoneRef } from "../../";
-
-const ref = createRef<DropzoneRef>();
-
-export const dropzone = (
-  <Dropzone ref={ref}>
-    {({ getRootProps, getInputProps }) => (
-      <div {...getRootProps()}>
-        <input {...getInputProps()} />
-        <p>Drop some files here.</p>
-        <button type="button" onClick={ref.current.open}>
-          Open file dialog
-        </button>
-      </div>
-    )}
-  </Dropzone>
-);