Modal Save Attendees - Githubissues

As a user, I want to have the ability to save the invitees I have chosen to my holiday invitation list.

When clicked, the save button must save the selected invitees to the holidayFriends collection
When clicked, the Modal box closes back to the holiday page
the friends list on the holiday page should reprint

nss-evening-cohort-8 / home-for-the-holidays