Refactor backfill.php, move post methods into date methods, fix some issues with target date/post.
Possible fixes for remove crap blacklist issues.
Use debug constant on postdate.
Fix issue in ReleaseRemover blacklist where if no results were found subsequent blacklists were skipped.
Check nZEDb_ECHOCLI constant in various classes.
Use carriage return (rewrite) on nzb_export echo, looks better.
Merge pull request #443 from nZEDb/dev

Dev