Included the logic to parse Oracle sequence information embedded in comments. refs #526

* Added logic in MetaLanguageUtils to parse the comment of a column, looking for @oraseq.
* Implemented an ANTLR4 visitor to process @oraseq rule in column comments.
* Refactored method to clone Attributes in AbstractJdbcMetadataManager, so that the comment is parsed for @oraseq. Including test.
* Minor style fixes in PerCommentColOraseqVisitor, PerCommentTabResationshipVisitor, and AttributeValueObject.
* A bug fix in DAO.stg

Added pomodoro file.