Initial transaction recovery sprouts
Merge branch 'manu-txlog-read-refactoring' into manu-log-recovery

Conflicts:
	nrv-core/src/main/scala/com/wajam/nrv/consistency/persistence/FileTransactionLog.scala
	nrv-core/src/test/scala/com/wajam/nrv/consistency/TestTransactionRecorder.scala
Working and unit tested transaction log recovery
Merge branch 'master' into manu-log-recovery

Conflicts:
	nrv-core/src/main/scala/com/wajam/nrv/consistency/persistence/FileTransactionLog.scala
Cleanup and typos
Merge pull request #102 from wajam/manu-log-recovery

Working and unit tested transaction log recovery helper