Update RconWindowController.java

Quickfix 7.0.0

9d1m2021y

Snapshot 3d1m2021y001v

Fixed ubuntu support
Removed gliches:
- Closing the program after stop
- Writing unformated text right after
- Linux support

Snapshot 23d12m2020y001v

Version 7.0.0.0 snapshot

Version 6.0.0

Version 5.3.0

Version 5.2.0

Version 5.1.0