refactor: remove bcrypt dependency and simplify password handling in …

[JulesGresset]

…user management and login components

Describe your changes

Password is sent in clear to the backend.
This includes the user management view.

How to test the feature

To be tested with Hello-Kitchen/Back-End#180

1. Try to connect
2. Test the user management in the manager menu

• Try to create a user and connect with his credentials
• Try to edit a user password and connect with his credentials

Issue ticket number and link

Closes #190

Checklist before requesting a review

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have performed a self-review of my code
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Documentation has been updated as required
  If a single item in this checklist is not checked, the pull request cannot be accepted