devel/py-trollius: Update to 2.0

• Update PORTVERSION and distinfo checksum (2.0)
• Update test target
• Update pkg-descr WWW: URL (match setup.py)

Changes:

https://trollius.readthedocs.org/changelog.html

PR: 206578, 205078
Approved by: skreuzer (maintainer)
Differential Revision: D5049