net/py-uritemplate:

-Remove CONFLICTS_INSTALL on net/py-uritemplate.py
-Add NO_ARCH
-Cosmetic fixes
-Record TIMESTAMP in distinfo

Submitted by: cpm
Reviewed by: feld, koobs (mentors)
Approved by: nivit (maintainer timeout, 2 weeks), feld, koobs (mentors)
Differential Revision: D8265