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

This reverts commit c92f4a5edd.

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

@@ -0,0 +1,54 @@
+import React from "react";
+import Dropzone from "../../";
+
+export default class Accept extends React.Component {
+  state = {
+    accepted: [],
+    rejected: [],
+  };
+
+  render() {
+    return (
+      <section>
+        <div className="dropzone">
+          <Dropzone
+            accept={{
+              "image/*": [".jpeg", ".png"],
+            }}
+            onDrop={(accepted, rejected) => {
+              this.setState({ accepted, rejected });
+            }}
+          >
+            {({ getRootProps }) => (
+              <div {...getRootProps()}>
+                <p>
+                  Try dropping some files here, or click to select files to
+                  upload.
+                </p>
+                <p>Only *.jpeg and *.png images will be accepted</p>
+              </div>
+            )}
+          </Dropzone>
+        </div>
+        <aside>
+          <h2>Accepted files</h2>
+          <ul>
+            {this.state.accepted.map((f) => (
+              <li key={f.name}>
+                {f.name} - {f.size} bytes
+              </li>
+            ))}
+          </ul>
+          <h2>Rejected files</h2>
+          <ul>
+            {this.state.rejected.map((f) => (
+              <li key={f.name}>
+                {f.name} - {f.size} bytes
+              </li>
+            ))}
+          </ul>
+        </aside>
+      </section>
+    );
+  }
+}