Create v2 of intestacy smart answer

https://www.pivotaltracker.com/story/show/56524190
Needs fact check so creating v2
Updated inherit without a will smart answer

Rewrote tests and code to match updated and clearer source docs.
Renumbered everything.
Updated flow and copy to match latest docs.
Simplified next links by removing combined items.

https://www.pivotaltracker.com/story/show/56524190
DRY the next step links

Addresses pull request feedback from Alex Tomlins
Merge remote-tracking branch 'origin/56524190-intestacy'