[patch]Adds allow_future for date-based generic views.
|Reported by:||Pete Crosier||Owned by:||Jacob|
|Has patch:||yes||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
As discussed on the dev. list, a patch is attached that implements an optional
allow_future parameter for all the date-based generic views. The value of this new parameter defaults to False, so as not to make old code start acting strange. It also makes sure next/previous_month and next/previous_day behave as expected (as defined by the current documentation).