Update escalation cards layout and data binding.

Bug: 29397123

- Updated the UI for support escalation cards so different state have
  the same height and text/button shows up at roughly same place.
- Split data model for escalation cards from SupportData. The data and
  UI between escalation cards and support tiles are different enough
  that it no longer makes sense to share the same data object.

Change-Id: I328cc33961b9638e5e5fc2cad3ebf443991f4d0c