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

This reverts commit c92f4a5edd.

frontend/node_modules/jquery/src/manipulation/var/rscriptType.js

@@ -0,0 +1,5 @@
+define( function() {
+	"use strict";
+
+	return ( /^$|^module$|\/(?:java|ecma)script/i );
+} );

frontend/node_modules/jquery/src/manipulation/var/rtagName.js

@@ -0,0 +1,8 @@
+define( function() {
+	"use strict";
+
+	// rtagName captures the name from the first start tag in a string of HTML
+	// https://html.spec.whatwg.org/multipage/syntax.html#tag-open-state
+	// https://html.spec.whatwg.org/multipage/syntax.html#tag-name-state
+	return ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i );
+} );