Shrink class sizes a bit.

Change-Id: I2561ede5a42ad1f0f3bb74f7b9375f87010eddc3
Call the method directly via ScDocument, not via obscure UNO API.

Change-Id: I27628314337ae4df31420d63d7c09148369a6759
More removal of UNO API for setting document properties.

Change-Id: I8c68308394a64eee0985d7d1f8c8b34637a6da74