scfg: add "long name/short name" toggle in door mode.
When running scfg -iD and you go into message sub-boards, only the short name is displayed. There are times I'd like to see the long name list instead. Maybe add "t" to toggle between short and long name display.
Example:
[AmigaNet Sub-boards (21)]
1: BBSNEWS AMY
2: BBSSOFT AMY
3: COMMS AMY
4: COMS AMY
5: FILE ANNOUNCE AMY
6: HARD AMY
...
I'd like to see
Amiganet: BBS Ads
Amiganet: BBS Software Discussions
Amiganet: Comms
Amiganet: Communications Discussions
File Announcements
Amiganet: Hardware Chat