Dependency editor mostly fixed.

EvalationrRx did not support dependencies on any but multiple choice question
types.  Have added back in most question types, but a few still not functioning
correctly (e.g., formatting on date is funky).  Also, not yet supporting count
based rules (like Z).  Other than that, dependency editor appears to be
functioning correctly.

	Rakefile: unrelated change.  Added shell script to uncomment debugger for the testbed.

	app/controllers/dependencys_controller.rb - return question_type as the primary data on ajax call.
	makes it easier to process results in .js.  Remove restrictions on question types that can be used
	for a dependency.

	app/views/dependencys/_dependency_condition_fields.html.erb - added sections to handle non
	multiple choice question types

	modified:   app/views/dependencys/_form.html.erb - restored f.input error_messages by adding in the
	dynamic_form gem.  Also, modified to use ajax for adding new dependencies.

	modified:   lib/assets/javascripts/surveyor_gui/surveyor_gui.js - modified update_logic function to
	keep rules limited to alpha rule keys.  Was using alphanumeric (e.g. "A or B or 0") but appears to clash
	with latest Surveyor validations.  Also, added hides/shows for non-multiple choice fields.

	lib/assets/stylesheets/surveyor_gui.sass - added some formatting for error messages.

	modified:   lib/surveyor_gui.rb - added require for dynamic_form gem

	modified:   lib/surveyor_gui/models/dependency_condition_methods.rb - removed attr_accessor as it was
	screwing up use of join_operator and rule_key_temp getters.  Added explicit join_operator setter (which
	returns nothing) to avoid it showing up in parameters list.

	lib/surveyor_gui/models/dependency_methods.rb - replaced setters for question_id and question_group_id as the
	defaults inherited from Surveyor created a problem for form editing.  Had to replace .nil? with .blank?.

	surveyor_gui.gemspec: Added dynamic_form to restore error handling lost with upgrade to Rails 3.2.  Will need to
	go back and change some other forms.