docs: mention the need for worker process restarts to avoid "memory leaks" (Issue #346) It might not be ideal to mention such details in the overview, but that seems like the best place for generic advice. (Kallithea should still aim for keeping memory growth under control.)

[tox]
minversion = 1.8
envlist = py27-pytest

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