[JRO] Reload engine files in dummy
[JRO] Reload engine files in dummy

By default the engine doesn't get loaded on every request.

`config.reload_plugins = true` in the dev environment's config will allow for reloading on requests like in normal dev mode.
jvoss/thredded,jailalawat/thredded-0.0.5_clone,jvoss/thredded,prohippocoder/thredded,jvoss/thredded,jailalawat/thredded-0.0.5_clone,jayroh/thredded,thredded/thredded,thredded/thredded,thredded/thredded,jayroh/thredded,jayroh/thredded,jayroh/thredded,prohippocoder/thredded,thredded/thredded,prohippocoder/thredded,jvoss/thredded,prohippocoder/thredded