Salesforce Universal Application Templates

We now have a universal template for Salesforce Applications!

The following commits add the scripts and necessary code to automatically generate a new template including any code changes to core, phone and store projects.  Generation is done whenever a "clean solution" is performed, and includes installing the template so the application is available when you do a "new project" from visual studio.

There is one necessary step after the new project is created - you must right click the solution and "enable nuget package restore" for build to work.  Once this is done, your app will build.

Please look at Config.cs and MainPage.xaml.cs for a few items that need to be set, corresponding to your connected app settings in Salesforce.