Update _ Contracts Generation System and Fixes

Changes

• Changed the contracts generation system. Random customers (maximum of 6 + groups when unlocked) will send contracts at the start of each night, and the Ziscord history will be cleared when going to sleep.

• Increased UI scale for resolutions above 1920x1080.

Fixes

• Fixed an error in the tutorial popup about the Reskator group.

• Fixed an issue where the aireplay tool was not upgraded if stored in server.