Added colorbox-rails gem to incorporate colorbox

	Gemfile: added colorbox-rails
	application.js: added reference to colorbox-rails
	application.css: added reference to colorbox-rails
	surveyor-gui.sass: added some changes accidentally backed out
	but unrelated to colorbox
minor correction to surveyforms/_form.html.erb
Added survey_sections pop up editor

	survey_section_controller.erb
	survey_sections/_form.html.erb
	survey_sections/new.html.erb
	survey_sections/edit.html.erb
added jquery plugins: jquery-forms, validate.js, blockUI.js

	jquery-forms.js: ajax submit forms
	validate.js: jquery validations of form fields
	blockUI.js: simulate synchronous behavior for asynchronous calls
	surveyor-gui.js: added some custom javascript for the form edit

	Gemfile: added jquery-forms
	application.js: added requires
Modified surveyforms controller

	surveyforms_controller.rb: add several functions to respond to
	ajax calls, including calls to insert or modify survey sections and
	questions, and to cut and paste questions.
Fixed surveyform erb that were not responding to $.fn.colorbox

	_form.html.erb
	_question_fields.html.erb
	_survey_section_fields.html.erb
	survey_sections/_Form.html.erb