Merge branch 'master' into php_tests_index
#136: html_form_ajax.js, implement ajax 'dataType' to handle server response
#136: logic_loader.php, return JSON values using 'print'
#136: logic_loader.php, remove unnecessary 'print '
#136: html_form_ajax.js, newline for 'console.log()'
#136: logic_loader.php, change 'ajax_welcome' -> 'msg_welcome'
#136: html_form_ajax.js, change 'ajax_welcome' -> 'msg_welcome'
#136: html_form_ajax.js, minor comment change
#136: logic_loader.php, minor comment change
Merge pull request #137 from jeff1evesque/js_html_form_ajax

#136: Return ajax values from server to javascript
#139: html_form_ajax.js, internal documentation on ajax
Merge pull request #140 from jeff1evesque/js_html_form_ajax

#139: html_form_ajax.js, internal documentation on ajax
#138: html_form_ajax.js, console.log 'Session Type'
#138: logic_loader.php, html_form_ajax.js, print entire POST array
#138: logic_loader.php, html_form_ajax.js, print entire POST array
#138: html_form_ajax.js, add feature support for html5 'datalist'
#138: html_form_ajax.js, serialize data into array
#138: logic_loader.php, resolve incorrect returned ajax values
#138: tests/php/index.php, additional internal documentation
#138: tests/php/index.php, minor internal documentation changes