Password strength indicator on user edit page
Add integration test for passphrase change feedback
Password confirmation indicator
Add password strength indicator to all password panels
Passphrase change: test confirmation guidance
Set aria-controls attribute for password/password confirmation

This is in accordance with [mozilla accessiblity guidance](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions)
Pass frontend password strength score to backend

This will allow us to monitor any discrepancies between the frontend
and backend implementations/configurations of zxcvbn that may trip up
users.
Only load password indicator code if panel present

The zxcvbn library is 700K and we shouldn't make users download it
if it's not needed.
Moving password feedback display logic to css
Add colour to password strength indicator
Add feature flag for password strength indicator
Remove jquery require (already in application.js)
Password change: add missing required, aria-required attrs
Merge pull request #178 from alphagov/frontend-feedback-while-changing-passwords

Client-side feedback while changing passwords