Added parameter "escaping" in routing configuration

In /applications/name/config/routes.js new boolean parameter "escaping"
can be used, default: true. So escaping==false "url" parameter will not
be escaped.
Example: {
url: "^\\/api\\/a\\?u$", // full regular expression syntax allowed
rewrite: "/example/simple/dataFromMemory.json",
escaping: false // no URL escaping flag
}