Added documentation generation for Neo4j Status Codes.
Fix AsciiDoc syntax and PDF table layout for status codes, add them to the manual.
Add a test to verify correct generation of status code documentation
Fix ErrorDocumentationGenerator build failure

- Improves error handling, such that exceptions are visibile in the console output of the Maven build
- Fix the actual build failure, by making sure that parent directories of the files we want to write, actually exist when we need them.
Merge pull request #1598 from jakewins/doc-status

Added documentation generation for Neo4j Status Codes.