Arvados

When the user is viewing an expiring collection (one where expires_at is not null):

• The leftmost information pane should include this sentence in bold: "This collection will expire in <duration>." Immediately after that sentence is an Undelete button, a normal Bootstrap button using the fa-recycle icon (this needs to be consistent with #9587). Pressing the Undelete button should update the collection to set its expires_at attribute to null. After successful undeletion, this sentence and button should be removed from the information pane.
• If the user presses "Create sharing link," or the file "Browse" button on the Upload tab, a confirmation alert should appear. It says, "This collection will expire in <duration>. Are you sure you want to edit it?" If the user presses OK in the confirmation, the requested action proceeds as normal. If the user presses Cancel, nothing happens, as if the user never pressed the first button.

Use Rails' distance_of_time_in_words method to format <duration> in the messages above. from_time is the current time, and to_time is the collection's expires_at value.