[O] Only display hours and minutes, not seconds

[Cecil Westerhof]

I have the following table:
|----------|
| Duration |
|----------|
| 2@ 15    |
| 2@ 30    |
| 2@ 30    |
| 0@ 45    |
|----------|
| 8@ 0' 0" |
|----------|
#+TBLFM: @>$1=vsum(@2..@-1)

I would like the total be displayed like:
    8@ 00'
instead of:
    8@ 0' 0"

Is this possible?

-- 
Cecil Westerhof