v1.84_0.17
- data of stations and systems can added and changed by user
- default value for EDDN is no longer because it's only for dev testing
- set value for EDDN schema from to and add a hint for users who have EDDN active
- option to cancel while asked for needed directorys on first start
- cleaned up system tab
- added new helper classes "controls_ext", "Extensions", "ObjectCompare"