Updates to session 1 including migrations, other setup steps.
Updates to session 1 including migrations, other setup steps.

csharpfritz/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,anurse/ConferencePlanner,csharpfritz/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,jongalloway/aspnetcore-app-workshop,anurse/ConferencePlanner,anurse/ConferencePlanner,dotnet-presentations/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,jongalloway/aspnetcore-app-workshop