Many changes for provisioning Linux server

* Attempt to set up password-less sudo for primary user.
* Create one or more user accounts.
* Optionally create the ZFS pool.
* Timezone taking from configuration file.
* Configure netatalk using provided configuration file.
Add cron jobs for ZFS maintenance

* Script to replicate shared file system to safe.
* Script to fix the file permissions in netatalk share.
Install tanuki incoming processor
Removing defunct script for Solaris setup
Remove mistakenly added file
Move cron scripts to a separate directory
Script tested on VM and working as expected

* Fixed a parser error from an earlier commit ('foramt').
* Change permissions of cron scripts explicitly to 0755.
* Elide path to python2.7 and let /usr/bin/env do its job.