Show proper overview of entered invitation details.
Allow indicating nobody will attend.
Log emails in development mode and always log that an email is being sent.
Allow invitations to be updated.
Update warning text as per Henk’s request.
Configure email for sendgrid.
Make seeds email configurable and include www in emails.
Make tests green.
Remove English from emails.
Fix use of to_sentence helper.
Add a simple manage page.
Update background image for optimised ones.
Update invitation text.
Small cleanup.
Update email copy.