AspNet Identity Provider for Azure Table Storage

Hi Guys

I did this provider for AspNet Identity backed by table storage instead of entity framework. The actual azure table implementation stuff is from this project https://github.com/s-innovations/AspNet-Identity-AzureTableStorage and referenced by nuget package build from the repository with myget.

I used the IdentityManager to test if the implementation worked and just committed the provider to the repository if its any use for others.