Initial changes to remove Domain

Moved domain models to folder in WebUI; removed Domain project.  We did
this to simplify things. Identity has its own context and is in WebUI.
This creates a circular dependency, and resolving the dependency by
moving the Identity models into Domain means a double install of
Identity, so removing Domain and moving domain models seemed like the
least messy way of resolving things. Also, from reading, it looks like
Identity deliberately makes it unnecessary to separate models from the
web project.
Added Migrations, Updated DB

Changed DB yet again to avoid issues. Everyone needs to update-db and
it'll create and seed their local db with data.