Add documentation to AccountsController Endpoints

[raymer]

We need api documentation on the SendVerificationCode and VerifyCode endpoints like we have elsewhere.

I put TODOs where the documentation needs go.

[ajayboina]

@raymer I noticed SendVerificationCode and VerifyCode end points removed from AccountController.cs with Fix Build commit.

[raymer]

@ajayboina yeah they're in the VerificationController now. So I axed em' from the Account controller.

[ajayboina]

there is already documentation for it. Do you think API's need any additional documentation?

[raymer]

I'm going to roll all documentation into the swagger issue.