frontend: fix FrontendFormMixin accidentally deriving from forms.Form
frontend: fix FrontendFormMixin accidentally deriving from forms.Form

rjw57/edpcmentoring,cuedpc/edpcmentoring,cuedpc/edpcmentoring,rjw57/edpcmentoring,cuedpc/edpcmentoring,cuedpc/edpcmentoring,rjw57/edpcmentoring,rjw57/edpcmentoring