[DCom] Joint Purchases 3.0.1

• Split payment and payment of its parts by different payment profiles
• Refund of payment before distribution (conversion to credits is available)
• Added review and rating system
• Improved integration with Credits (payment, conversion, refund, withdrawal request)
• Payment immediately after recording
• Added user criteria to upgrade user groups
• Requirement to accept the terms and conditions before recording
• Automatic prefix switching when changing the purchase stage (Multiprefix support)
• Anonymous participation
• Fixed all bugs found