doc: Fix typo

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>
POSIXCompat: only translate to old-style entries for older clients
bcfg2-test: added checks for missing bundles and unknown packages
travis-ci: use mirrors when installing, test on py3.3
bcfg2-test: fixed test for missing bundles
travis-ci: skip tests with optional deps on py3.3
doc: Add reference to Packages.Refresh command

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>
bcfg2-lint: allow uppercase in usernames