Make second user admin
load seeds before tests
make user an admin only if user is the first one after the deleted user.
tests for admin attribute assignment only to 2nd user, if 1rst is the deleted user.
add user in tests, it is used for ichain testing
Merge pull request #487 from differentreality/user_is_admin

Make second user admin
Migrate registration attributes to questions
Rework seeds.rb
fix relation for conferences-questions
re-write error message for no answers