Update URIs from slowmo and psdo throughout projects.

[grosscol]

Display-Lab/fraisty#51
Display-Lab/bit-stomach#27
Display-Lab/think-pudding#8
Display-Lab/candidate-smasher#1

[grosscol]

Bitstomach and Candidate Smasher completed.

[grosscol]

The check_urls.sh script can be pointed at directories to enumerate the URIs not found in psdo and cpo. Make pass through projects with aim of minimizing non-psdo and non-cpo URIs.