* [IMP] Updated unit tests
* [FIX] Fixed renamed attributes
* [FIX] Remove deleted fields
* [IMP] Add printing.server and printing.job models
* [IMP] Allow to cancel all jobs, enable, and disable printers
* [IMP] Split the cups part of print_document into a new print_file method
* [IMP] Updated cron job to run the action_update_jobs method
* [ADD] Add a migration script to create a printing server from configuration