Fix form without fields and use of callable in queryset filter
Fix form without fields and use of callable in queryset filter

tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web