whitespacecleanup: exclude email test reference kallithea/tests/models/test_dump_html_mails.ref.html is expected to contain trailing whitespace in the "-- " de-facto standard signature separator (as e.g. referenced in RFC 3676, section 4.3).

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    py26-pytest: unittest2
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}