Incorrect default value for use_tz

[Michael Nelson]

The use_tz setting should default to False for django 1.4, 1.5 [1], but django_configglue gives it a default of true (caused confusion during the upgrade to django1.5).

[1] https://docs.djangoproject.com/en/dev/ref/settings/#use-tz

[Łukasz Czyżykowski (lukasz-czyzykowski)]

The thing is that we take default values from what django sets for new projects, not the default value taken, when the setting is absent.