Typo fixed and Spanish (Spain) translations

[xusy2k]

Typo fixed "ambiguious" in code "invalid_bidirectional" at validators.py Updated Spanish (Spain) translations

[tarak]

Hey, thank you very much for this PR. I definitely would like to merge it, but you have changed several strings that are to be translated. To merge would mean all the other translation files would be broken. I need to review this when I have time, probably during the weekend.

[xusy2k]

OK! I only executed django-admin.py makemessages -l es, translated them and compiled

[xusy2k]

Yes, but there are new translation strings.

BTW: I've released new version with Catalan translations

[xusy2k]

I think never remove entries at PasswordChangeRequired, so if you force an user to change his password, system always ask to change his password

[tarak]

Hey, I have reviewed your PR. I would like to ask you a few things:

• Can you please pull upstream and merge it again? I have pulled other PR's...
• Please do not change the version number. If you resubmit a PR I will take of that myself and also upload the new version to PyPI.
• Can you split up the change in xusy2k/django-password-policies@f386ff57f5b0d06b84d9dadadfa8f5447485083b in another PR, please? This is somehow important to me because the PasswordChange needs more work...
• I have changed the typo "ambiguous" in all other django.po files so this has been taken care of. (See https://github.com/tarak/django-password-policies/pull/30#discussion-diff-26559064)

If it's more convenient we could also close this PR and take care of everything in new PR's. I'm waiting for your submission before uploading 0.3.2 to PyPI.

Thank you in advance for your support!