Display more info in rb-site --version and the Version Mismatch page.

Review Request #9025 — Created June 19, 2017 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
dc73722...

Reviewers

Sometimes users end up in situations where they're running Review Board
in the web server using a different Python version than they're now
using on the command line, or they're using a mix of eggs and wheels.

We now display the Python version and the install path in
rb-site --version, and we include this information along with some
possible resolutions in the Version Mismatch page. This should help get
people unstuck, and give us more tools for debugging when things go
wrong.

Tested the version mismatch and saw the Python version and install path
being used.

Ran rb-site --version and saw the Python version and install path.