Added the new way to process invites for club_admin only.
This patch contains the separability needed to ensure that we can successfully do the access checks we need.
Host invites can for the time being only be completed by developers due to the reorganization.
Patch by: Lennard de Rijk
Reviewed by: to-be-reviewed
from django.dispatch import Signal
template_rendered = Signal(providing_args=["template", "context"])