Working textboxes.

This passes `rows` to the `height` field in the other createTextEditor method, but [Nokia's docs](http://developer.nokia.com/resources/library/Java/_zip/GUID-237420DE-CCBE-4A74-A129-572E0708D428/com/nokia/mid/ui/TextEditor.html) say the other method's `width` and `height` parameters specify the "editor size in pixels," so I don't think we can simply pass this value to that parameter.

The docs are ambiguous about `width`, which is presumably the same for both methods. But for `rows` and `height`, it looks like we need to translate one to the other.