docs: update using make to generate docs for the release tarball using only setup.py build_docs misses: html version of man pages html version of roundup-admin help doc version of a current config.ini file

try:
    # Python 3+
    from ssl import SSLError
except (ImportError, AttributeError):
    # Python 2.5-2.7
    from socket import sslerror as SSLError  # noqa: F401