[IMP] Print a warning in the logs if the server is not available for automatic data updates
[IMP] Allow to update jobs without defining server ids, used to update on all servers at a time
[IMP] Update completed jobs which were not complete at the previous update when updating only not-completed jobs
[IMP] Automatically deactive jobs purged from the CUPS server
[IMP] Add a cron to update not-completed jobs each 5 minutes, and another to update all jobs each day
[IMP] Allow to update only some jobs, instead of all jobs + FIX active state for purged jobs
[REF] Rewritten the printing part to be able to retrieve the cups job id
[IMP] Reversed the default jobs order
[REF] Added a method used to open a connection with the cups server
[IMP] Add URI field on printer
[IMP] Improved the update_printers method to update existing printers, in addition to creating unknown ones
[IMP] Add the cancel method on printers.job
[FIX] Fixed typo