Merge pull request #331 from jeff1evesque/python_data_validator

#314: replace 'sys.exit()' to 'return False'
#333: load_logic.php, remove unnecessary 'whitespace'
#333: load_logic.php, minor indentation changes
#333: load_logic.php, minor indentation changes
#333: load_logic.php, minor indentation changes
#333: load_logic.php, minor indentation changes
#333: svm_training.py, temporarily adjust file
#333: svm_training.py, readjust file
#334: load_logic.php, restructure JSON 'file properites'
#334: load_logic.php, add comment
#334: load_logic.php, remove unnecessary comment
#334: load_logic.php, properly add element to JSON array
#334: load_logic.php, minor indentation
#334: svm_training.py, temporary adjust file
#334: svm_training.py, readjust file
Merge pull request #337 from jeff1evesque/php_load_logic

#334: Restructure JSON 'file properties' structure
#335: data_validator.py, update 'data_validation.py'