Aurélien Delobelle 3f4a1adbb9 Fewer queries on stats/scales + Fix ... Scales: - Fix #chunks when used with std_chunk=True (there was one too many at the beginning) - Scale.end gives the end of the last chunk (instead of its start) So scale.begin -> scale.end gives the full range of the scale. `kfet_day` now returns an aware datetime. ScaleMixin: - new method `get_by_chunks` which use only one query and ranks elements according to the scale. Elements are returned by a generator for each scale chunk (and all chunks are returned as a generator too). ArticlesStatSales and AccountStatOperations use this new method to avoid issuing #scale_chunks queries. ArticleStat: - fixed on Chrome		2017-04-12 18:03:31 +02:00
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kfet	Fewer queries on stats/scales + Fix	2017-04-12 18:03:31 +02:00