moving help worker to the more descriptive help_base
changing a 1971 date to 1970 as the 'beginning of time'
if data being added to the database doesn't have a mod_time add one
fix comment and which file to skip
moving help worker to help_base
adding a work_chain mod_time function to address Issue #36
remove overly verbose print output
fix/revert a change that didn't properly skip certain files
change the logic on get sample/sample_set; also fix faulty logic on recursive dependencies