Updated O365 API samples to fix NuGet package reference

Updated all NuGet package references where **Microsoft.Azure.ActiveDirectory.GraphClient** was present in the `packages.config` files to use the correct [Microsoft.Azure.ActiveDirectory.GraphClient](http://www.nuget.org/packages/Microsoft.Azure.ActiveDirectory.GraphClient) NuGet package reference instead (v2.0.2). The incorrect references is added by the Office 365 API Tools from a locally cached copy of the *Microsoft.Azure.ActiveDirectory.GraphClient* package, version 1.0.22, that does not exist in the public [NuGet Package registry](http://www.nuget.org/packages). This causes an issue when cloning the project from source control and doing a local "NuGet Package Restore".

Also removed all references to the Office 365 NuGet packages

Also cleared our any values for the **ClientID** or **ClientSecret** in the `web.config` files.