Private API Key/Secret

Each user should have a private randomly generated alphanumeric API key/secret that will be utilized for grading assignments.

• The API key/secret should be generated when the user signs up.
• The API key should be 20 alphanumeric characters and the secret 40 alphanumeric characters.
• The Key/secret should not be available on the users public portfolio e.g., http://rpi.analyticsdojo.com/jkuruzovich
• The API key button should be on the top of the users profile under "Update Your Settings."
• The user should be able to regenerate a key/secret.