UI3: Selecting a transfer link opens up the e-mail detail screen

[monkeyiq]

A potential confusion was noted in the new RNP 3.x UI.
filesender/filesender#1920

I am happy to make the changes suggested by @peter- on that thread; hiding the subject to make the get a link message not confusing with the subject/message that an email might have.

Though I thought I would contact the board to chime in on this as the UI experts who designed this system may have structured things this way for a reason.

[meijer]

Discussing in board.