Fixed  Cron-job  for public post

fixed the cronjob.php to work with public post
added a new column in the public _post SQL table
updated the post.class / post.php and post template to work with code
changes
Deleted the old non-working cron.php file
Merge pull request #14 from nitestryker/Cron-Job-Fix

Fixed  Cron-job  for public post