Improve JS slugify process

To handle non-recognized charsets.

core/stringutil/slug.go

@@ -16,6 +16,8 @@ import (
 	"unicode"
 )
 
+// TODO" replace with https://github.com/mcmatts/slug
+
 // MakeSlug creates a slug, suitable for use in a URL, from a string
 func MakeSlug(str string) string {
 	slg := strings.Map(

core/stringutil/slug_test.go

@@ -13,8 +13,12 @@ package stringutil
 
 import "testing"
 
+// go test github.com/documize/community/core/stringutil -run TestSlug
 func TestSlug(t *testing.T) {
+	st(t, "Hello World", "hello-world")
 	st(t, " Zip--up ", "zip-up")
+	st(t, "Общее", "obshee")
+	st(t, "哈威", "哈威")
 }
 
 func st(t *testing.T, in, out string) {