Feature/custom confirmation

[otytlandsvik]

:gem: Custom emails to event participants

:sparkles: Added ability for admin to input custom body for confirmation email

Default email is fetched from API and can be edited in the modal

:sparkles: Added button to send a custom email to event participants

Choose between sending mail to all participants or confirmed participants

:lipstick: Fix styling of component displaying event views

:camera: Before :camera: After

:warning: Must be merged together with corresponding API pr

[otytlandsvik]

LGTM 🙌 One thought on the design, maybe have the number of receivers in the confirmation page instead first modal as it looks a little out of pace in the corner. Maybe as a bulletpoint or under the send button.

Do you mean Eposten vil bli send til 1 studenter in this modal? Better to have it just below the togglebutton or above the form?