Fixes an error occurring when editing a User as Developer when the ToS have been signed. By disabling the input of the field Django will not attempt to wrongly parse it as a DateTime instance. Patch by: Haoyu Bai Reviewed by: Lennard de Rijk

from django.dispatch import Signal

request_started = Signal()
request_finished = Signal()
got_request_exception = Signal(providing_args=["request"])