Sylvie Ye authored Jul 26, 2018 and Romain Bignon committed Aug 18, 2018

Some users have to sign documents.
It can be skipped by going on Account page. But account page can also be redirected on document signature page like this:
AccountsPage(GET) -> DocumentsSignaturePage -> AccountsPage(GET) -> DocumentsSignaturePage

Plus, for transaction and investment it's a POST request, document signature page can be here after the post.
Every pages can be redirected like this in go_details_page:
AccountsPage(GET) -> DocumentsSignaturePage
AccountsPage(GET) -> TransactionsInvestmentsPage(POST) -> DocumentsSignaturePage

It's easier to raise ActionNeeded.

Closes: 15699@sibi