Feature: Reuse tokens if they haven't expired (#7017)

* Reuse tokens if they haven't expired

* Fix failing tests

* Update UserController.js

* Update tests

* Tests for invalid config

* restart tests

src/Options/index.js

@@ -124,6 +124,9 @@ export interface ParseServerOptions {
   preventLoginWithUnverifiedEmail: ?boolean;
   /* Email verification token validity duration, in seconds */
   emailVerifyTokenValidityDuration: ?number;
+  /* an existing password reset token should be reused when resend verification is requested
+  :DEFAULT: false */
+  emailVerifyTokenReuseIfValid: ?boolean;
   /* account lockout policy for failed login attempts */
   accountLockout: ?any;
   /* Password policy for enforcing password related rules */