MDL-75670 generated a regression in forms password element layout that was not
being displayed in a single line as before.
- Modify the password element template to display the input and the password
unmask icon in a single line.
- Change the password unmask button styles to be consistent with other
focus states.
- Modify passwordunmask behat form field to work with the new password element
layout changes.
Mikel Martín
9733ccc381