Reworked parameterized LegalEntity.
Replaced @Table annotation with @MappedSuperclass.
Changed visibility of Person's constructor to satisfy JPA.
Added shcema to @Table definition.
Added setter for Id.
Reorganized operation order.
Modified for testing purposes.
Additions to Builder API.
Expanded testing. Still a work in progress.
Added test data files.
Added MySQL drop create sql statement PU.
Added in-memory Derby PU.
Removed redundant files and directories.
Refactored code for better sql script generation.
Merge branch 'feature-jpa-implementation' into develop

* feature-jpa-implementation:
  Refactored code for better sql script generation.
  Removed redundant files and directories.
  Added MySQL drop create sql statement PU. Added in-memory Derby PU.
  Expanded testing. Still a work in progress. Added test data files.
  Modified for testing purposes. Additions to Builder API.
  Reorganized operation order.
  Added shcema to @Table definition. Added setter for Id.
  Replaced @Table annotation with @MappedSuperclass. Changed visibility of Person's constructor to satisfy JPA.
  Reworked parameterized LegalEntity.