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

This reverts commit c92f4a5edd.

frontend/node_modules/@svgdotjs/svg.js/src/polyfills/children.js

@@ -0,0 +1,8 @@
+import { filter } from '../utils/utils.js'
+
+// IE11: children does not work for svg nodes
+export default function children(node) {
+  return filter(node.childNodes, function (child) {
+    return child.nodeType === 1
+  })
+}