Added functionalities to restrict certain user operations like update, password change, and deletion in demo mode. This is done to prevent demo users from modifying crucial data. Helper methods are created for standard re-usable checks. Also, Blade directive is added for frontend UI demo checks.
The dimensions for both the 'image_head' and 'image_body' captcha images have been increased to provide a clearer and more readable captcha for users. 'Image_head' has been updated from 150x40 to 500x75, and 'image_body' from 300x240 to 500x500.
