#58: html_form.js, 'remove_callback' function skeleton
#58: html_form.js, trim 'element['button_class']', outline 'remove_callback'
#58: html_form.js, remove form elements, use object dot notation
#58: html_form.js, only remove elements when there is two or more
#58: html_form.js, remove form elements corresponding 'br'
#58: html_form.js, correctly remove elements corresponding 'br:last'
Merge pull request #59 from jeff1evesque/js_html_form

#58: Add 'delegation listener' for 'Remove' button