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

This reverts commit c92f4a5edd.

frontend/node_modules/flatpickr/dist/esm/plugins/labelPlugin/labelPlugin.js

@@ -0,0 +1,22 @@
+function labelPlugin() {
+    return function (fp) {
+        return {
+            onReady: function () {
+                var id = fp.input.id;
+                if (!id) {
+                    return;
+                }
+                if (fp.mobileInput) {
+                    fp.input.removeAttribute("id");
+                    fp.mobileInput.id = id;
+                }
+                else if (fp.altInput) {
+                    fp.input.removeAttribute("id");
+                    fp.altInput.id = id;
+                }
+                fp.loadedPlugins.push("labelPlugin");
+            },
+        };
+    };
+}
+export default labelPlugin;