Do not email invited but not accepted users.

Improve test coverage; change group.users to exclude users who have not yet accepted
their invitations.
migrate after fetch
Merge branch 'bug/dont-email-invited-users'

Conflicts:
	features/mention_user.feature
Resolve conflicts
Merge branch 'master' of github.com:enspiral/loomio
Merge branch 'master' of github.com:enspiral/loomio
Merge branch 'master' of github.com:enspiral/loomio
Merge branch 'master' of github.com:enspiral/loomio
Values page first draft
values page
WIP
Merge branch 'master' of github.com:enspiral/loomio into feature/homepage2
Merge remote-tracking branch 'origin'

Conflicts:
	db/schema.rb
new homepage
cleaning up whoopsie branch
cleaning up whoopsie branch
cleaning up whoopsie branch
cleaning up whoopsie branch
cleaning up whoopsie branch
refactoring, cleaning up