Updated to Sitecore 8.2 + using Sitecore Myget feed for dependencies

[herskinduk]

Updated for Sitecore 8.2

• Updated project files for .NET 4.5.2
• Added Nuget references for Sitecore binaries
• Added Nuget.Config with sitecore.myget.net source
• Fixed change in SSC configuration
• Removed EnableAnalytics property
• Fixed broken unit test
• Fixed broken buildscript

Fixed Invalid Cast Exception on "Sitecore Analytics" tab