Add password warning and password suggestion UI options

[brennan-nc]

I've done some work on this project in order to present warnings and suggestions to users (as showing password strength itself is a little too non-user friendly for non-technical users, in our opinion). We've forked the repo and are using the fork in our project. If you want any of these changes downstream, here they are.

While I haven't done a ton of backwards compatibility testing. I believe this release to be non-API breaking and that it should be backwards compatible.

Here's a brief change log:

• You can now display the password warnings and suggestions returned by zxcvbn.
• The password strength meter now supports jQuery UI as an alternative to Bootstrap.
• The widget now allows you to validate by password length (min and max).
• The project is now tested and working in IE8. Some polyfills were added for this.
• Debounce is now used on the keyup event to have it trigger less frequently.
• The password strength and confirmation widgets now respect PasswordInput's render_value.
• Git ignored PyCharm's idea files directory.
• A javascript/jQuery event, attached to the HTML document, is fired, indicating whether the entered password meets a min score.

If you have any questions or comments, let me know.

[aj-may]

Thanks for the PR. This would be easier for me to test and integrate if this was broken into smaller PRs. Would you be able to break this out into 1 feature per PR?

[brennan-nc]

I'll see what I can do.