commit - Word importer improvements

[Justin Bradford]

I've added support for more paragraph properties in the Word importer,
so it will now handle line spacing (such as double-spaced text), and
should handle margins on the paragraph, including indentation and the top
margin. I don't know what the Abiword property is for bottom margins (or
whether it exists at all).

I believe that covers the current Abiword functionality in paragraph
properties, so section properties are next...

Justin