Fix: gen-next: even non-members were marked as "to be kicked"
Fix: gen-next: do not take memberships not based on current blockchain
Fix: gen-next: do not take certifications not replayable yet
Fix: now apply full tests over transactions when receiving it
Fix: gen-next: transaction's "comment" field was not taken into account
Fix: gen-next: transactions are now iteratively added and checked all together