Enable automatic migrations

Ditches the previous approach as this didn't actually migrate anything.
Adds automatic migrations, including a base state to migrate from (or to
if we don't have a database).
Merge branch 'upstream' into develop

Conflicts:
	VotingApplication/VotingApplication.Data/VotingApplication.Data.csproj
Added Chat Migration
Merge pull request #84 from tpkelly/develop

Enable automatic migrations