Missing dynamic time estimates in texts

[ovitrif]

Tasks

• Activity List: best time estimates in transfer items subtitle text (e.g.: (± 10d))
• Activity Details: transfer_pending status text with correct duration for 'confirms in X' text
• Check what other places are requiring our logic for displaying time estimates and fix as needed

[ovitrif]

@jvsena42 Added you because you assigned yourself to #426 which is now closed.

Feel free to unassign if wanting to focus on something else.