[ckan-dev] sort facets

[Hildegard Gerlach]

Dear all,
I found an interesting feature I would like to implement.

the possibility of having the choice to sort the facet lists either by 
number of occurrences  or alphabetically like done here:

https://catalog.data.gov/dataset

Any idea where I need to change what ?
I had a look at https://github.com/GSA/ckan/tree/release-datagov/ckan , 
but I don't know exactly whre to look.

Thanks

Hilde