Store envelope.IsReadAndConfirm() in isReadAndConfirm variable to avoid redundant calls and improve code readability when setting ViewData["Title"]. No change to logic or behavior.
Refined the logic for setting ViewData["Title"] in ShowEnvelope.cshtml. Now, if the envelope requires read and confirm, the title displays "Confirm Document" instead of just "Sign Document" or "View Document", providing clearer context for users.
Replaced hardcoded German text in the envelope sharing UI and JavaScript alerts with localized resource strings for German, English, and French. Added new translations for labels, prompts, and error/success messages. Improved internationalization and user experience by making the sharing feature fully language-aware.
Refactored Culture model to use required and non-nullable properties.
Removed nullable checks for Info in ShowEnvelope.cshtml.
Changed DI from Cultures to MultiCulture in _ViewImports.cshtml.
A "Refresh" button with a counterclockwise arrow icon is now shown in the envelope UI, but only when the envelope is not in read-only mode. The button uses standard styling classes for consistency.
