Merge pull request #286 from jeff1evesque/python_svm_training

#270: Adjust 'svm_training.py' to hand file uploads
#267: data_validator.py, 'import magic'
#267: data_validator.py, 'json_file_obj' parameter in 'file_upload_validation()'
#287: load_dataset.php, change 'file_content' -> 'file_pointer'
#287: load_dataset.php, change 'file_pointer' -> 'file_temp'
#287: load_dataset.php, minor comment on 'file_temp' variable
Merge pull request #288 from jeff1evesque/php_load_dataset

#287: Change 'file_content' to 'file_temp'
Merge branch 'master' into python_data_validator
#267: data_validator.py, remove 'import magic'
#289: load_dataset.php, remove 'file_type', 'file_size'
Merge pull request #290 from jeff1evesque/php_load_dataset

#289: Remove 'file_type', 'file_size'
Merge branch 'python_data_validator' of https://github.com/jeff1evesque/machine-learning into python_data_validator
#267: scikit-learn, merge master / upstream branch
#267: data_validator.py, attempt to print uploaded file type
#267: data_validator.py, no longer need to print file type
#267: data_validator.py, only print 'mime' type
#267: data_validator.py, define acceptable 'file upload' formats
#267: data_validator.py, define IF statement test
#267: data_validator.py, define error message
#267: data_validator.py, print error message