Morpho

Currently, if table is sorted and then do a refresh action. The sorted table
will be destroied and become unsorted. This is not good.

For example, when we do a download action on a sorted table. After it is done,
table will be refreshed. Then table become from sorted status to unsorted
status. So this datapackage probably go to another line. It is difficult to
find it back. So maybe we should keep same sorted status( unsorted or sorted
by some column and order) after refresh.