Merge pull request #700 from jeff1evesque/python_svm_training

#631: Call 'dataset_validation' method in 'svm_training.py'
#694: helper.py, create skeleton 'jsonmerge' method
#694: helper.py, add parameters to 'jsonmerge' method
#694: helper.py, general outline of 'jsonmerge' method
#694: helper.py, define 'jsonmerge' method
#694: helper.py, add comment
#694: helper.py, add comment
Merge pull request #701 from jeff1evesque/python_helper

#694: Create 'jsonmerge' method in 'helper.py'
#702: svm_training.py, properly validate and store JSON object