Fixed a few things in this commit:
- Added a few commandline options:
  - An option to disable the e-mail report
  - An option to make the output of the script verbose
    The contents of the e-mail is put on the screen
  - An option to specify the external configurationfile
    This means that the old way is now depricated, using this option is
    recommeded
- The subject of the email was incorrect, it is correct now
- Improved the backup report slightly (added an empty line between the
  parts of 2 different directories)