Feature: Password generation and show/hide functionality

[Serafeim-Katsaros]

Description

• Adds a “Generate Password” button to the signup form.
  The password is now generated fully client-side using the Web Crypto API (crypto.getRandomValues) without any backend code or AJAX requests.
• Adds a professional show/hide toggle next to the first password input field, allowing users to reveal or hide the password.

Why this PR is needed:

• Improves user experience by allowing users to generate strong passwords without typing them manually.
• Makes the password field more user-friendly with a professional show/hide toggle.
• Ensures proper multilingual support for all new UI elements.

Generate Password Details:

• The password is generated entirely on the client-side using the Web Crypto API (crypto.getRandomValues()), which produces cryptographically secure random numbers.
• Each character is randomly selected from a charset containing uppercase letters, lowercase letters, digits, and symbols.
• Default password length is 20 characters.
• This method ensures that the generated password is strong and unpredictable, suitable for secure authentication.

Screenshots:

Notes:

• This PR does not affect existing login or signup functionality.
• The UI elements are consistent with the existing Bootstrap styling in the project.

[egorsmkv]

@Serafeim-Katsaros I think, it's better to generate a password using JS instead of Python

[Serafeim-Katsaros]

@Serafeim-Katsaros I think, it's better to generate a password using JS instead of Python

Thank you for your feedback. I completely understand your point --- generating the password directly in JavaScript would simplify the process and remove the need for an extra backend request. I can update the implementation so the random code is generated client-side using Web Crypto API for security. Would you prefer this approach?

[egorsmkv]

@Serafeim-Katsaros I think, it's better to generate a password using JS instead of Python

Thank you for your feedback. I completely understand your point --- generating the password directly in JavaScript would simplify the process and remove the need for an extra backend request. I can update the implementation so the random code is generated client-side using Web Crypto API for security. Would you prefer this approach?

Yep, sounds good

[Serafeim-Katsaros]

@Serafeim-Katsaros I think, it's better to generate a password using JS instead of Python

Thank you for your feedback. I completely understand your point --- generating the password directly in JavaScript would simplify the process and remove the need for an extra backend request. I can update the implementation so the random code is generated client-side using Web Crypto API for security. Would you prefer this approach?

Yep, sounds good

I've updated the implementation to generate passwords entirely on the client-side using the Web Crypto API and the AJAX calls have been removed. Please have a look when you get a chance. Thanks!

[egorsmkv]

Thanks. Can you check locale files and add if there's a need to add them?

[Serafeim-Katsaros]

Thanks. Can you check locale files and add if there's a need to add them?

I’ve updated the locale files and added the new strings for the “Generate Password” and “Show/Hide password” buttons. They are now translatable in all supported languages.

[egorsmkv]

lgtm

[Serafeim-Katsaros]

Hi! I’ve made the requested changes.
When you have time, could you take another look at the review?