Refactoring: delayed points handling was removed from TsdbFormat
Feature: More logging in UniqueId and Kafka channel
Refactoring: minor PipelineCommand refactoring
Refactoring: UniqueIdActor explicitly depends on ExecutionContext
Tests: PointsStorageStub recreates UniqueId caches
Fix: UniqueIdActor resolves ids incorrectly if batch contains QualifiedId's having the same id
Refactoring: UniqueIdActor readability
Fix: UniqueIdStorage logging: call to Object[].toString()
Logging: point groups statistics in OpenTSDB2HttpApiServer
Feature: integration test: slicer - kafka - pump - hbase - query