adds candidate recruitment project label field

completes #93

test/models/candidate_test.rb

@@ -6,6 +6,7 @@ class CandidateTest < ActiveSupport::TestCase
     candidate = Candidate.create(name: 'new name',
                                  email: 'test@mailinator.com',
                                  experience: '0-3',
+                                 project: 'Client',
                                  quiz_id: quizzes(:fed).id)
 
     assert candidate.test_hash.present?
@@ -16,6 +17,7 @@ class CandidateTest < ActiveSupport::TestCase
     candidate = Candidate.create(name: 'new name',
                                  email: email,
                                  experience: '0-3',
+                                 project: 'Client',
                                  recruiter_id: users(:recruiter).id,
                                  quiz_id: quizzes(:fed).id)