Bug 958889 - Part 1: Add getFirefoxAccountState method.
Bug 958889 - Part 2: Add getFirefoxAccountEmail method.
Bug 958889 - Part 3: Add resendVerificationEmail method.
Bug 958889 - Part 4: Move FxAccountSetupTask to fxa.tasks.
Bug 958889 - Part 5: Refactor *Task out from FxAccountSetupTask.
Bug 958889 - Part 6: Move resend code to FxAccountCodeResender from FxAccountConfirmAccountActivity.