Added tests for Credentials

Removed routes from credentials that aren't used along with controller actions

test/models/credential_test.rb

@@ -19,7 +19,7 @@ class CredentialTest < ActiveSupport::TestCase
   end
 
   test "domain added to name" do
-    @c = Credential.new(email: "jez", password: "1234567&ab", domain_id: domains(:one).id)
+    @c = Credential.new(email: "jez@#{domains(:one).domain}", password: "1234567&ab", domain_id: domains(:one).id)
     assert @c.save
   end
 end