NamelessCMS

Code update:
- Updated cash register API
- Added purchase description to new transaction creation (Buying products: {products} on {username} account)
- Added buyer email to new transaction creation
- Added field for entering backup email (In case a purchase is made by an unregistered player on the site, the backup email will be used)
- Added Ukrainian language to cash register settings menu
- Added generation of links "Notification URL" and "Successful payment URL"
- Updated cash register settings view and its description

Cash register update:
- Added new payment methods: Hamster Kombat and Uzbekistan cards
- New API