This changes the s3sync setup at multiple places:
* The s3sync script was using wrong paths which are now corrected
* After the sync report_mirror was started which is now installed
* The necessary report_mirror files are installed
* The s3sync script is now running from cron instead as a service
* Before touching any files fedmsg is queried to see if new files
are available for syncing
* logrotate has been adapted to the new setup
