cmd/syncthing: Minor support bundle tweaks
cmd/syncthing: Minor support bundle tweaks

- Name the zip file with the short device ID
- Include the log on disk, if there is one

syncthing/syncthing,imsodin/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing,wweich/syncthing,AudriusButkevicius/syncthing,syncthing/syncthing,rumpelsepp/syncthing,imsodin/syncthing,wweich/syncthing,AudriusButkevicius/syncthing,AudriusButkevicius/syncthing,rumpelsepp/syncthing,imsodin/syncthing,rumpelsepp/syncthing,wweich/syncthing,uok/syncthing,uok/syncthing,syncthing/syncthing,rumpelsepp/syncthing,imsodin/syncthing,syncthing/syncthing,imsodin/syncthing,uok/syncthing,xduugu/syncthing,xduugu/syncthing,syncthing/syncthing,wweich/syncthing,xduugu/syncthing,xduugu/syncthing,uok/syncthing