Assure consistency in postgres responses

[geoffreyaldebert]

Postgres does not assure consistency when we query a table with a filter statement. More Infos.

To avoid that, we need to apply an order by XXX on a query. Hydra does already support a primary key for every csv transformed into tables which is call __id. We will replicate that process for metrics tables.

We propose that we add to every query that we apply to api-tabular an order by __id.

Beware, when user ask to api-tabular a specific order by to process it well. For instance order by __id, COLUMN_EX