Add skeletons for Zanussi/Necta vending machines

[clawgrip]

New systems marked not working

Firenze (vending machine) [Joan RF, jordigahan] Venezia (coffee vending machine) [Joan RF, jordigahan] unknown Zanussi / Necta vending machine [Joan RF, jordigahan]

Also did some small fixes:

• skeleton/webtouchone.cpp: Typo
• skeleton/pulltrigger.cpp: Change COMP to GAME
• move 'radikaldarts' to Gaelco Folder
• skeleton/design.cpp: Add a note about the displays on "T" series machines