Batch importer should throw an exception when schema creation constraints are violated.
Refactor: Push schema index/constraint conflict messages into the exceptions to align with SPI.

Proper messages for these exceptions can only be created within the context of the operation
and below the SPI level so that such users (Cypher) enjoy increased friendliness.
Merge pull request #3657 from martinfurmanski/2.0-schema-index-constraint-spi-message-alignment

Refactor: Push schema index/constraint conflict messages into the exceptions to align with SPI.
Merge pull request #3658 from martinfurmanski/2.0-batch-inserter-should-honor-schema-creation-constraints

Batch importer should throw an exception when schema creation constraints are violated.
Add troubleshooting tip for WebLogic.