Adding posts: Add Post Title to parent page selection field

hi there,

When adding pages, and wanting to select a parent page, the ID as title in the selection field is rather useless. You'd have to look em up if you wanted to select the correct page (and enable them before, too).

Adding just the post title, maybe in brackets, like so:

```
Page-ID 123 (What a lovely day)
Page-ID 345 (To die)
```

Would help a lot!

cu, w0lf.
