Improve serach function with quick suggestions

main.go

@@ -98,6 +98,7 @@ func main() {
 	}))
 	http.HandleFunc("/_logout", h.handleLogout)
 	http.HandleFunc("/_reindex", h.handleReindex)
+	http.HandleFunc("/_search", h.handleSearchSuggest)
 	http.HandleFunc("/quickadd", h.handleQuickAdd)
 	http.Handle("/", h)
 
@@ -284,9 +285,13 @@ func (h *handler) serveDir(w http.ResponseWriter, r *http.Request, urlPath, fsPa
 		rawContent = "# " + heading + "\n\n"
 	}
 
+	parent := ""
+	if urlPath != "/" {
+		parent = parentURL(urlPath)
+	}
 	data := pageData{
 		Title:          title,
-		Crumbs:         buildCrumbs(urlPath),
+		ParentURL:      parent,
 		CanEdit:        true,
 		EditMode:       editMode,
 		IsRoot:         urlPath == "/",