ADDED rspec for apprenticeship and rating models
ADDED apprenticeship_spec, rating_spec and role_spec .rb files
UPDATED apprenticship and rating spec
ADDED site index, controller, semantic-ui stylesheets and javascripts
Merge pull request #6 from Simon245/apprenticeship_tests

spec tests
Merge remote-tracking branch 'origin/master' into conversation_test_cases
MOVED conversation_spec to spec/models folder