Merge pull request #34 from siordache/monitoring_sio

MonitoringDataStorage: permanent folder in ctor
fixed same intellij warnings, filter layout improvement
Gradle: exclude tmp/ from source dist
Merge remote-tracking branch 'origin/master'
Typo in method name: getMonitroingDataStorageInfo
removed unnecessary dependency injection of engine
added SimpleJmxExporter in copper-coreengine to ease the registering of JMX beans when COPPER runs without Spring
added constructor RetryingTxnBatchRunner(DataSource) for convenience
added @since
changed version to 3.1-SNAPSHOT, because new features have been added
#36 Reduce size of full-source.jar - reduced content of copper_2x_objects.zip
Merge pull request #35 from siordache/monitoring_typo

Typo in method name: getMonitroingDataStorageInfo