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
- get_scale_args method of ScaleMixin retrieves useful GET params for
Scale object instanciation (by default from request.GET)
- it takes into account the type of the scale arg
- prefix used for GET param can be modified in stats_manifest funcs and
ScaleMixin
- References to `Stat` in `Scale` objects are deleted (because scales
are independent of stats)
- KFET_WAKES_UP_AT is now a time object insted of an hour
- Proper use of date, datetime, timedelta, etc (django.utils.timezone
provides neither datetime nor timedelta)
kfet.statistic
- delete no longer used defs
- new mixin - ScaleMixin
- get scale args from GET params
- chunkify querysets according to a scale
Article stats
- use SingleResumeStat for manifest
- use ScaleMixin for sales
- update urls
- update permission required: teamkfet
Account stats
- update permission required: teamkfet
- operations use ScaleMixin
- fix manifests urls
K-Fêt - Statistics
New base class - StatScale
- create scale, given chunk size (timedelta), start and end times
- get labels of
- get start and end datetimes of chunks
DayStatScale: Scale whose chunks interval is 1 day
WeekStatScale: same with 1 week
MonthStatScale: same with 1 month
AccountStatOperationList: manifest of operations stats of an account
- renamed from AccountStatLastAll
- updated according to SingleResumeStat
AccountStatOperation:
- renamed from AccountStatLast
- remove scale logic with use of StatScale objects
- used scale is given by `scale` and `scale_args` GET params
- add filter on operations types with `types` GET param
AccountStatLast(Day,Week,Month) are deleted ("merged" in
AccountStatOperation)
