Merge pull request #123 from jeff1evesque/js_html_form

#117: html_form.js, adjust 'Estimated Analysis' fieldset
#124: ajax_graphic.js, Ensure overlay covers submit button
Merge pull request #125 from jeff1evesque/js_ajax_graphic

#124: ajax_graphic.js, Ensure overlay covers submit button
#126: ajax_graphic.js, Implement darker ajax overlay
#126: ajax_graphic.js, lighter overlay
Merge pull request #127 from jeff1evesque/js_ajax_graphic

#126: ajax_graphic.js, Implement darker ajax overlay
#128: loading.gif, replace image
#128: form_svm.css, decrease the size of 'loading.gif'
Merge pull request #129 from jeff1evesque/img_loading_gif

#128: form_svm.css, decrease the size of 'loading.gif'
#130: laoding.gif, change image
#130: form_svm.css, change 'loader.gif' dimensions
Merge pull request #131 from jeff1evesque/img_loading_gif

#130: Ajax choose different image for 'loading.gif'
#102: html_form_ajax.js, provide documentation on $.ajax({ })
Merge pull request #132 from jeff1evesque/js_html_form_ajax

#102: Provide documentation on $.ajax({ })
#116: html_form_ajax.js, Properly implement ajax form error
#116: html_form_ajax.js, reorder code segments in 'fail()'
Merge pull request #133 from jeff1evesque/js_html_form_ajax

#116: Properly implement ajax form error
#134: html_form_ajax.js, Ensure php receives ajax POST data
#134: html_form_ajax.js, add internal doc on ajax 'data' property
Merge pull request #135 from jeff1evesque/js_html_form_ajax

#134: Ensure php receives ajax POST data