Added interactor gem
Added gem interactor
Merge branch 'master' into organize
Remove unused files
Added default status (invite) to members
Added association between group and users (through members)
Added delegate on member to user for some fields
Refactored groups controller
Added member form with only fields: email and group
Added interactor to find or invite user
Added status to check user invited (or not)
FIXED: Correctly return when fail
Refactor! Now use only class to invite user to group
Added root_url to test environment (:
Added uniqueness on group (scoped to user) in member
Added status to member on fixture
Added group to context on interactor FindOrInviteUser
Added some verifications to InviteUserToGroup
Added email for invite member
Smallest changes in invitation instructions email