fix assetDir path on windows

main.go

@@ -24,6 +24,7 @@ import (
 	mrand "math/rand"
 	"os"
 	"os/user"
+	"path"
 	"path/filepath"
 	"runtime"
 	"time"
@@ -167,7 +168,8 @@ func mainUi(flagLocal bool, flagClientUI bool) {
 		if runtime.GOOS == "windows" {
 			dir = "/" + dir
 		}
-		gcd.SetAssetPath("file://" + filepath.Join(dir, "assets") + string(filepath.Separator))
+		// QML uses '/' refardless of platform (so we use path.Join here not filepath.Join)
+		gcd.SetAssetPath("file://" + path.Join(dir, "assets") + "/")
 	}
 	log.Infof("gcd.assetPath = '%v'\n", gcd.AssetPath())