OpenWerewolf-0.7 beta

Changelog:

• Godfather, Mafioso, Mafia Escort, Executioner, Fruit Vendor, Medium
• Mafia promotion mechanics
• Relaxed username validation rules
• Added UI element to remind the player of their username and role
• Fixed role colours - now consistent
• JSON format for rolelists
• Fixed several CSS issues with scrollbars and chat windows etc
• Several new admin commands

Note - download the source zip and run npm run build. More details are available in the project README.