db:migrate
tag and tagging models
relationships
debugger gem
tag tests and abilities
custom cancan matcher to avoid deprecation warnings
added parent_change_allowed to option sets to implement data integrity policy
removed some unused stuff from response
added tests for response controller create and update
refactored option set factory
added ability to create form with multilevel option set
made responses handle answer ranks and tested
added rank to answers
tidied answers some
restored answer_for_question method
added grouped_answers method
created AnswerSet and tested
refactored answers view and got working without option stuff
added option level name to answer editable form
refactored some delegates and aliases