Fold Feature ITs into cloudfoundry-login-server module

https://www.pivotaltracker.com/story/show/70476204
Migrate remaining integration tests to selenium.

https://www.pivotaltracker.com/story/show/70476204
Remove unused ServerRunning

https://www.pivotaltracker.com/story/show/70476204
Run integration tests first

https://www.pivotaltracker.com/story/show/70476204