Updated to 0.12.1

Added simple caching for the textilized pages / books

Added compatibility with rails 0.11.1

Added compatibility with rails 0.10.0 including routes

Changed author_controller to if based postback style

Added Textile and HTML export.

Added sensible YAML exporter which uses hierakies export infrastructure.

Big increase in software health by much better test coverage.

Got rid of all _html db fields and added them as methods to the models. Textile is now computed on request, this should be cached before next release.

Refactored database. Versioning was moved into an observer.

Redid all cruft controllers to follow new conventions. 

Repaired live preview and switched it to use HTTP POST instead of GET because the GET method was killing access log files. 

Added more test cases to backup the reordering.