remove subjects generated tests

they were causing an error "method_missing 'r'"
rspec updated
remove 'r' from test.rb
add 'faker' gem
generate 'subject' model
add 'launchy' gem
display subjects in the header
generate field model
establish relationship between subject and field
how fields in the top bar menu

[Delivers #53072001]
set up rails_admin (with devise) for data administration