* Clean up Sync Manager - make it easier to understand
** Update all Sync calls, to use a single function per file, that already has the local file and remote contents.
  This can be used to determine if we SHOULD upload/download -- as well as COUNT the files changed.
* Add MD-5 checksum checks
* Move to a global variable for DEBUG and make console independent. Also, remove it from all the IOCs
* Add Slack notifications.