widget layout status

[Caolán McNamara]

I've been fixing up the remaining pesky problems. e.g. re-doing the
printer dialog and sorting out the painfully opaque tab-through-controls
logic in the light of intermediate layout widgets and I'm fairly happy
with how things are shaping up.

So, here's a little documentation and some screenshots
https://wiki.documentfoundation.org/Development/WidgetLayout

I hope to merge into master either late this week or early next all
going well and incrementally extend/improve on master from then onwards.

C.