@yurenju shouldn't we followup on this, and make it so that each app using `connections.rules.manifestURLs`
should set it via a build.js and use an helper method to get apps urls?
```
utils.getAppManifestUrl("homescreen")
getAppManifestUrl(app) config.GAIA_SCHEME + app + config.GAIA_DOMAIN + config.GAIA_PORT
```
?