Tweaked gitignore

gitignore removed all composer and npm files, so automated builds would fail

conf/site/node_modules/es5-ext/object/unserialize.js

@@ -0,0 +1,8 @@
+"use strict";
+
+var value = require("./valid-value");
+
+module.exports = function (code) {
+	// eslint-disable-next-line no-new-func
+	return new Function("return " + value(code))();
+};