Form validation improvement 2

[ankormoreankor]

Part 2 of forms validation improvement

• Added more validation cases on the client side to show better validation error to a user and improve UX
• Added more translations, including the validation messages
• More properly organized form fields into field sets where necessary, preferably
• The Option component can now render an error message the same way as other form fields
• The Fieldset component can now render the legend element visible only to assistive devices. The legend element is essential for the fieldset element
• Reduced unnecessary wrappers in forms

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