with the following refactorings:
1) Removed the "printhost_slug" config from the Printer config
and from all the Printer config related spots.
2) "printhost_slug" renamed to "printhost_port". Slug sounds nasty.
3) Improved error reporting of RepetierHost class.
4) Refactored for the new "Physical Printers"
Following refactorings were done independently of the Repetier pull request:
1) Removed PrintHost static print config.
2) Clean-up after conversion of print host configuration
from Printer config to Physical Printer config.
3) Fixed some issues, where the Printer config was still queried for
host configuration. Vojtech believes that this should not happen
after the host configuration is converted to physical printers.
Vojtech still feels that more refactoring is needed in regard to porting
the host configuration from Printer profile to the new Physical Printer
profile.
1) All slicer's exceptions are now derived from Slic3r::Exception.
2) New exceptions are defined for slicing errors.
3) Exceptions are propagated to the Plater to show.
It remains to modify the slicing back-end to throw the new SlicingError
exceptions instead of std::runtime_error and to show the other exceptions
by a message dialog instead of a notification.
