Play nice with password managers

[martenson]

see details at https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. using a password manager verify whether your password is being suggested/autocompleted on login/registration/pass change pages

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[mvdbeek]

Very cool, thank you!