Time format and order in save probabilities

Hi @vagudets ,

I'm using the branch dev-test_bigpredidata and when using this recipe and script I noticed that the order of the dimensions of the saved probability and skill are different. Probs have latitude, longitude and time, and in the skill the time goes first. I can change this manually in the script but maybe it's something that can be updated in the master branch to make the outputs more homogeneous.

Also, would it be possible to save the time formatted? for example in the probabilities of the forecast from February the dimensions are:

 latitude = 36.5, 37.5, 38.5, 39.5, 40.5, 41.5, 42.5, 43.5 ;

 longitude = -9.5, -8.5, -7.5, -6.5, -5.5, -4.5, -3.5, -2.5, -1.5, -0.5, 0.5, 
    1.5, 2.5, 3.5, 4.5 ;

 time = 280848, 281553, 282285, 283017, 283749, 284481 ;

could the time dimension have the same format as the forecast times?

Many thanks,

Paloma