moved edit survey section title to unobtrusive javascript

	app/controllers/survey_sections_controller.rb: switched render to pull up blank instead of redirect back.  Makes
	windows.onload fire.

	app/views/survey_sections/_form.html.erb: removed onload javascript.

	app/views/survey_sections/blank.html.erb: new file for render to trigger windows.onload

	app/views/surveyforms/_survey_section_fields.html.erb: took out javascript in survey edit title button and made
        it unobtrusive.

	lib/assets/javascripts/surveyor_gui/surveyor_gui.js: added function for edit section colorbox.

	lib/assets/stylesheets/surveyor_gui.sass: added css to shrink the width of the survey section title.