Do not send e-mail when generating WebAPI token
Do not send e-mail when generating WebAPI token

The CircleCI integration will now not send an e-mail when creating
its API token.

Testing Done:
Created a CircleCI integration and an e-mail was not sent.

Reviewed at https://reviews.reviewboard.org/r/9259/

reviewboard/rbintegrations,reviewboard/rbintegrations,reviewboard/rbintegrations