Handle Typeface for Attribute Inspector

[Kritarie]

The Attribute Inspector does not handle displaying the Typeface of a TextView very well. Ideally, the property would be displayed as Typeface Roboto-Bold with the right-aligned value text styled with the Typeface. This is made a bit complex because the Typeface class doesn't contain methods for querying the name. A possible implementation could read from assets until it finds a font file whose Typeface == the TextView's Typeface, and we can use the name of the file as the value.