Architectural improvements

[adamfoneil]

To enable some improvements in the UI project, including a WPF implementation and a more marketable application overall, I see that we need to focus some efforts in this repo.

Please use the feature/architecture-improvements branch for all work on this issue.

• multi .NET version targeting #34 (Usman)
• multiple assembly "conventions" (EF vs AO) #29 (Prabhu)
• db-to-db improvements #16