Issue #118: Changed the DOCTYPE to HTML5 and replaced all <h:body> by <body>.
Issue #269: Error page correctly presented and showing the exception that occurred.
Issue #269: Reading the entire stack trace.
Issue #269: Error page and  exception presentation improved.
Fixed #270: packages controller renamed to model.
Issue #271: Support of plain, HTML and mixed messages implemented.
Issue #271: Rearranging the classes in correct packages and removing unnecessary code.
Issue #271: Changing in classes due to the previous refactoring.
Issue #272 Configuration and beginning of the migration to QueryDSL.
Fixed #273