Update 1.67: +300 signs/billboards for map editor and more...

Hi everyone, a new update with +300 of signs and billboards for editor map.

Stay cool and rock n roll
Helios

[CHANGELOG]
- Add: Editor map - Category "Signs and billboards"
- Add: Editor map - 312 signs and billboards
- Add: New loot - Corpse
- Add: +600 corpse loot in official map
- Add: New vehicles icons
- Improve: Gangster job - New gear