Add a configuration file reader to the Node server
Add a configuration file reader to the Node server

Read `configUI5.json` for `siteRoot`, `webRoot`, `port`, and `resourcesRoot`.

Rearranged code to get a different look. Note sure that a global `ui5` variable
is the way to go. Working towards something that will be easy to put into an
external Javascript file for both this and the Express server.

The `resourcesRoot` value isn't used yet.

mdhender/serveUI5,mdhender/serveUI5,mdhender/serveUI5