[TEST] Test for Gateways functionality (RT-1906)

Yes, I prefer jQuery style too, but when I removed getters from TrustPage object and made all those jQuery style selectors to be plain properties - then I got errors in tests. Changing from jQuery style to protractor solved problem.
I really don't know why there was errors, but trying to find that out is too time consuming task, which I think don't worth it.