Fix air attack placement in HedgeEditor/Construction Mode
Caused by the restructuring of how air attack works
Fix inconsistencies in guest nick name generation
When the setting net/nick is empty, HW generates a guest name. But there were several problems:
- Team name did not match guest name
- Random guest number was re-rolled multiple times, causing inconsistencies
- Guest number was often too large (now capped at 99999)
Fix turn end if placing air attack in bouncy world edge map was denied
Fixes
bug #728.