Added Anchor system from Legacy Spoutcraft.  Needs to be hooked to Renderers.

Signed-off-by: Mike Howe <mike@mcsnetworks.com>
Exposed custom ubuntu font for other GUI widgets.

Signed-off-by: Mike Howe <mike@mcsnetworks.com>
Allow CustomFont to set colors via int values.

Signed-off-by: Mike Howe <mike@mcsnetworks.com>