Update password strength meter

[bartekn]

@bekkibolthouse

Password strength meter on client says "Password1" was a "good" password (3 out of 4 bars!) -- this is a common password that would be easy to crack by a modest attack.

Consider library used by coinbase and wealthfront among other money-handling companies: https://github.com/dropbox/zxcvbn

Originally in: https://github.com/stellar/stellar-api/issues/63

[gterzian]

I'm writing some tests for the relevant controllers, to make any change/refactoring easier. #1181

If you do decide to switch to this library (which looks excellent by the way), I'de be up for making the change too.

[bekkibolthouse]

@gterzian sounds great. Can I introduce you via email to another dev who has offered to help with the same? Shoot me a message at bekki at stellar dot org. Thanks!

[gterzian]

@bekkibolthouse did you ever receive my email, I guess you all must have been very busy 😄 In any case let me know if I can help with anything.

[bekkibolthouse]

@gterzian I sent an email your way on March 17th but will resend now with more context. Thanks for the reminder!

[gterzian]

@bekkibolthouse got it thanks! sorry for missing that email before!