Fix bad assignment causing sourceType to fail

Closes #184.
Remove unused import
Support local refs for jsonschema2pojo.org

Close #183.
Add integration test for enum using extended characters
added m2e mappings.
Moved generation code from CLI package to core.
Updated module dependencies, so that core is the entry point, instead of the CLI.
Merge pull request #198 from ctrimble/feature_module-dependencies

Module Dependency Graph Reorg