Fixed a bug in reminder sending.
Fixed a bug in reminder sending.

Previously there was a grave bug that prevented any reminder from being
generated.  It should check for 2 weeks ago, not two weeks from now, which is
virtually impossible unless someone imported payments dated in the future.

AriMartti/sikteeri,AriMartti/sikteeri,kapsiry/sikteeri,joneskoo/sikteeri,annttu/sikteeri,kapsiry/sikteeri,joneskoo/sikteeri,kapsiry/sikteeri,AriMartti/sikteeri,joneskoo/sikteeri,annttu/sikteeri,AriMartti/sikteeri,joneskoo/sikteeri,annttu/sikteeri,kapsiry/sikteeri,annttu/sikteeri