Contribution success page display time is off

[samajammin]

https://www.notion.so/efdn/Create-general-countdown-utility-function-timer-28ab69b08fba4360a691ab6257421f7f

Reallocated with 3 minutes left: shows 0 days, 0 hours left:

Should show the smallest 2 time units, like the Round Information component:

[samajammin]

Closely related to #84 - perhaps we create a generalized utility function that we use everywhere?