Single Login Password/Pin

[Nik1]

Require master password "re-prompt" for some items

Add an option for an item to require the master password to be entered again before it can be viewed/used. GitHub issues: https://github.com/bitwarden/browser/issues/476 https://github.com/bitwarden/core/issues/35 https://github.com/bitwarden/core/issues/83

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