Add configurable base path for reverse proxy use (#169)

* ui: Refactor routing functions into Router record
* ui: Store base URI in AppConfig
* ui: Use basePath in Router functions
* backend: Add Web.BasePath config option and update routes
* Tweaks to get SPA to bootstrap basePath configured
* ui: basePath support for apis/serve
* ui: basePath support for message monitor
* web: Redirect requests to / when basePath configured
* doc: add basepath to config.md
* Closes #107

ui/webpack.config.js

@@ -6,7 +6,7 @@ module.exports = (env, argv) => {
   const config = {
     output: {
       filename: 'static/[name].[hash:8].js',
-      publicPath: '/',
+      publicPath: '',
     },
     module: {
       rules: [