- script-syntax.py now exits with 1 instead of silently catching the
error if lua or ruby are missing
- index paths are absolute (from the repo root)
- less strong suggestion for third-party packs
- re-added lua-example and test-perlin doc
- corrected and clarified Compile some more
Expands coverage of scripts linting, and improves checks for a correct
title. Various fixes to make 'python travis/all.py' work for offline
users; when the TRAVIS envvar is not set it now fails without an error.
Minor cleanup in conf.py