epsutil

escputil is invoked with a timeout. Error handling has been improved. Miscellaneous cleanups, a Makefile fix, and other improvements were also made.

A few compatibility issues with styles and old models were fixed. It is now prepared for localization: German is done, and Italian is started. There are a few UI refinements to save a bit more screen real estate, an about window, and the usual amount of small fixes and improvements.