Merge remote-tracking branch 'origin/dev' into dev

# Conflicts:
#	app/grpc_server/main.go
#	app/server/docs/tx.go
#	app/server/handlers/handlers.go
#	app/server/handlers/identities.go
#	app/server/handlers/tick.go
#	app/server/handlers/tx.go
#	app/server/main.go
#	business/data/identity/identity.go
#	business/data/identity/identity_test.go
#	business/data/identity/models.go
#	business/data/tick/models.go
#	business/data/tick/tick.go
#	business/data/tick/tick_test.go
#	business/data/tx/models.go
#	business/data/tx/tx.go
#	business/data/tx/tx_test.go
#	foundation/rpc_server/rpc_server.go
#	go.mod
#	go.sum
#	protobuff/Makefile
#	protobuff/qubic.pb.go
#	protobuff/qubic.pb.gw.go
#	protobuff/qubic.proto
#	protobuff/qubic_grpc.pb.go