Fix log entry order in Parsers.LogFiles

Also add better testing for the order of log entries
Fixes #144
Add missing archive logs
Fix broken unit test

We dont have full control over file modification times
in git, so we cant really test if get_logfiles returns files
in the correct order.
tests/parsers: remove runCommand usage from tests
Merge pull request #147 from pynag/bugfix-log-entry-order

Fix log entry order in Parsers.LogFiles