FEAT #12091 TIME 1:30 fix priv in signatureBook

src/frontend/app/signature-book.component.html

src/frontend/app/visa/visa-workflow.component.html

src/frontend/app/visa/visa-workflow.component.ts

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts