Initial BatchBundle import into Oro Platform
Some adpataion to remove ImportExport dependencies
Cleanup CS
Merge branch 'master' into feature/BatchBundle
Use dynamic timezone
Fixes PMD warning
CS Fixes
CS Fixes
Remove refs to ImportExportBundle
Fix toString and add test on it
Fixes problem with date = null
CS Fixes
Replace getEntityManager() by getManager()
Add cascade constraint when deleting Job instance
Add delete constraint when removing Job execution
CRM-484: Refactor OroBatchBundle
 - added StepExecutionAwareInterface
 - updated ItemStep
 - small CS fixes
CRM-473: Move OroBatchBundle classes from GridBundle that manipulates iterable results for query and calculates total count
- moved BufferedQueryResultIterator to OroBatchBundle from OroGridBundle
- moved CountCalculator from OroGridBundle to OroBatchBundle
- updated client code
Merge branch 'feature/contact_import_export' of github.com:laboro/platform into feature/contact_import_export
CRM-484: Refactor OroBatchBundle
 - fixed Connector dependency in BatchBundle
CRM-474: Create reader that reads all entities from repository
- fixed issues in BufferedQueryResultIterator
- added basic exceptions to OroImportExportBundle
- added entity reader