setting up migration
added invitees and test for inviting with no email or callbacks yet
added mailing to invitees with testing
added invite accepting and declining, and checks if invite already exists. needs testing
accept and decline invites, testing for invites
updated nav layout to display signed in as
added tests for inviting a user who has already signed up
added separate controller for user invitees actions, added filtering, changed tests
Merge pull request #8 from craigmcginley/invitees

Invitees