Merge pull request #285 from jeff1evesque/php_load_dataset

#283: Change semicolon to comma (typo)
#270: svm_training.py, perform 'file upload validation'
#270: svm_training.py, properly validate 'file upload', 'training' properties
#270: svm_training.py, pass 'sys.argv[1]' to 'file_upload_validation'
Merge pull request #286 from jeff1evesque/python_svm_training

#270: Adjust 'svm_training.py' to hand file uploads
#287: load_dataset.php, change 'file_content' -> 'file_pointer'