VITAL: correct previous fix, so that we don't do the classic rm -f *
And the same again, but with less severexc consequences
An extra correction to the harvester-modifying code - pass in the correct path to *all* the iterate_files functions
Non-essential, but make my life easier for testing purposes by allowing a flag to be set to avoid re-downloading the wikimedia commons dump.
Should make no difference to the normal EoL harvesting process
Merge pull request #90 from hyanwong/essential_wikimedia_fix

VITAL: correct previous fix, so that we don't do the classic rm -f *