Use basename as title if empty when scraping by fragment (#3040)

* Fallback to file basename if title empty in scrape
* Populate dialog from basename if title empty

pkg/models/model_gallery.go

@@ -2,6 +2,7 @@ package models
 
 import (
 	"context"
+	"path/filepath"
 	"strconv"
 	"time"
 
@@ -128,7 +129,7 @@ func (g Gallery) GetTitle() string {
 		return g.Title
 	}
 
-	return g.Path
+	return filepath.Base(g.Path)
 }
 
 // DisplayName returns a display name for the scene for logging purposes.