Added PokerDemoAppMongoDb stub project to the PokerDemo solution. This project will implement the server-side code for the MongoDb version of the PokerDemo.
Merge branch 'master' of https://github.com/Starcounter/PokerDemo
Added nuget reference to the MongoDb C# driver (the official one) to the PokerDemoAppMongoDb project.
Fixed references to Starcounter assemblies from the PokerDemoAppMongoDb project not to copy local.