Use elm reactor for dev assets (#1133)

* Serve assets from elm reactor

* Update bindata.go

Makefile

@@ -68,14 +68,14 @@ go-bindata:
 template/internal/deftmpl/bindata.go: template/default.tmpl
 	@go-bindata $(bindata_flags) -mode 420 -modtime 1 -pkg deftmpl -o template/internal/deftmpl/bindata.go template/default.tmpl
 
-ui/bindata.go: ui/app/script.js ui/app/index.html ui/lib
+ui/bindata.go: ui/app/script.js ui/app/index.html ui/app/lib
 # Using "-mode 420" and "-modtime 1" to make assets make target deterministic.
 # It sets all file permissions and time stamps to 420 and 1
 	@go-bindata $(bindata_flags) -mode 420 -modtime 1 -pkg ui -o \
 		ui/bindata.go ui/app/script.js \
 		ui/app/index.html \
 		ui/app/favicon.ico \
-		ui/lib/...
+		ui/app/lib/...
 
 ui/app/script.js: $(shell find ui/app/src -iname *.elm)
 	cd $(FRONTEND_DIR) && $(MAKE) script.js

ui/app/src/Main.elm

@@ -77,7 +77,7 @@ init flags location =
             if prod then
                 location.pathname
             else
-                "http://localhost:9093/"
+                "/"
     in
         update (urlUpdate location)
             (Model

ui/web.go

@@ -67,7 +67,7 @@ func Register(r *route.Router, reloadCh chan<- struct{}, logger log.Logger) {
 	r.Get("/lib/*filepath", ihf("lib_files",
 		func(w http.ResponseWriter, req *http.Request) {
 			fp := route.Param(req.Context(), "filepath")
-			serveAsset(w, req, filepath.Join("ui/lib", fp), logger)
+			serveAsset(w, req, filepath.Join("ui/app/lib", fp), logger)
 		},
 	))