SHDP-285 Use spring 4.x and remove cascading

- Updated from Spring Framework 3.x to 4.x (4.0.2)
- Changed from Spring Batch 2.x to 3.x
- Changed from Spring Integration 3.x to 4.x
- Fixed what got broken due to batch/si/core api changes
- Removed cascading project and its docs and tests
Removing cascading references