Merge pull request #739 from jeff1evesque/python_data_creator

#736: data_creator.py, change double to single quotes
#742: config.py, remove unnecessary schema defintion
Merge pull request #746 from jeff1evesque/python_config

#742: config.py, remove unnecessary schema defintion
#741: form_validator.js, remove 'dependent variable' validation
Merge pull request #747 from jeff1evesque/js_form_validator

#741: Remove 'dependent variable' validation
#740: html_form.js, remove dependent variable input fields
Merge pull request #748 from jeff1evesque/js_html_form

#740: Remove dependent variable input fields
#740: html_form.js, capitalize first letter of HTML 'legend'
#740: html_form.js, add instruction regarding independent variable labels
Merge pull request #749 from jeff1evesque/js_html_form

#740: Adjust minor typos
#756: sample.csv, add file
Merge pull request #758 from jeff1evesque/csv_sample

#756: sample.csv, add file
#756: sample.csv, minor adjustment in column heading
Merge pull request #759 from jeff1evesque/csv_sample

#756: sample.csv, minor adjustment in column heading
#757: sample-1.csv, add file
Merge pull request #760 from jeff1evesque/csv_sample_1

Add 'sample-1.csv' to the 'test/' subdirectory
#757: sample-1.css, add semi-duplicated records
#757: sample-1.css, fix typo
Merge pull request #761 from jeff1evesque/csv_sample_1

#757: add additional duplicated records to 'sample-1.csv'
#755: html_form.js, remove generated HTML elements associated with indep vars