Address the app generated 503s

* Use proper usage of `maxLag` for process bump.
* Add in simple referer check mentioned in #343 to prevent SEO/abuse.
* Remove separator from `./routesStatic.js` and let `join` do it's op.

Closes #345

**NOTE**: Server cloud services may already handle load balancing but keeping this in for the time being... if it crops up again, bump to a maximum of 175ms. toobusy-js does use timers that are never stopped even at the equivalient of `document-idle` event state. If this package proves long term to be an issue remove it completely... however during testing period it **PASSED**.