Add sorting support for queries about cabolabs-ehrserver HOT 4 OPEN

Sort can be a query field, but be overriden by a query parameter.

from cabolabs-ehrserver.

The sort attribute for datavalue queries will depend on the group option. Group none, can sort by general attributes only: compo id or date created. Group compo can sort by compo attributes. Group paht can sort by date inside each series, or by value inside each series (can't sort the global result because is a collection of series and the sort makes sense inside each series).

from cabolabs-ehrserver.

Check #368 that is for max / offset applied to query result.

Thinking about sorting for datavalue: datavalue grouped by path should always be sorted by date since it is a list of time series.

from cabolabs-ehrserver.

This will be added when a client need sorting

from cabolabs-ehrserver.