Queued and ordered transaction recording (WIP)
Merge branch 'master' into manu-tracking-tx-recorder
Debuged TransactionRecorder
Merge branch 'master' into manu-tracking-tx-recorder

Conflicts:
	nrv-core/src/main/scala/com/wajam/nrv/consistency/ConsistencyMasterSlave.scala
No error when tx log is disabled and log directory doest not exists
Ensure ConsistencyOne implementation is called in handleOutgoing
Merge pull request #82 from wajam/manu-tracking-tx-recorder

Ordered transactions logging