Fix random index calculation in resetForm() - Closes #651

[webmaster128]

What was the problem?

random index did not return random index. See #651.

How did I fix it?

Apply correct formula, see #651

How to test it?

Hmm, I din't know how to build this project. But I guess account creation should now include the last word in the password confirmation step.

Review checklist

• The PR solves Random index does not return random index in Confirm #651
• All new code is covered with unit tests?
• All new features are covered with e2e tests?
• All new code follows best practices?

[webmaster128]

CI is failing with "TimeoutError: waiting for element '.joyride-tooltip__header'". I have no clue what that means. Can this be related to my change?

[reyraa]

I'm so glad to see you dove so deep into code to find this issue. My presumption - mistakenly - was that 1 is inclusive in the returned value of Math.random. Thanks for the descriptive ticket and clean PR.

[webmaster128]

My pleasure :) All 3 passphrase related PRs can be ported to Lisk Nano. What is the strategy here? Are those changes needed in nano? Do you want me to port them? Or do you do that on your own?