Tabbed case detail

FB129673

Technical spec: https://confluence.dimagi.com/display/ccinternal/Tabbed+Case+Detail

Not-so-technical spec: https://docs.google.com/a/dimagi.com/document/d/1MiGqDJA59ZN9ycEWuq5ObVc9lhpVe0TgwCAfInhDzF8
There's also an attach to activity part of this lifecycle. Did we evaluate what's good to put in that v. in the createView part of the lifecycle?