Function queryIsActive

docs/lib/ReactRouter.js:4020–4026

* Returns true if all key/value pairs in the given query are * currently active.

(query, activeQuery)

	 * currently active.
	 */
	function queryIsActive(query, activeQuery) {
	  if (activeQuery == null) return query == null;

	  if (query == null) return true;

	  return deepEqual(query, activeQuery);
	}

	/**
	 * Returns true if a <Link> to the given pathname/query combination is