[Delivers #50230813] Add Support for Bulk Delete
added metadata functions to cloud files
Added integration tests for the new Delete Metadata (object and containers) methods
When available (and in a known format), use error message returned from the API call in the resulting exception details
Add support for prefix in commits
Change prefix to be before region
Update to use Json.NET 5.0.6 and SimpleRESTServices 1.1.0.0
Remove files which are generated by the build
Remove the unused ExtensionMethods class
Remove the IRetryLogic interface because it duplicates an interface provided by SimpleRESTServices
Fix documentation and implementation in ServerImage - images were being treated as servers
Sandcastle documentation project updates

- Add a project reference to corelib to ensure that the SDK is built before the documentation project
- Enable the IntelliSense Component to generate a transformed XML documentation file
- Modify the syntax filters to use the same languages as MSDN: C#, VB, C++, and F#
- Modify the visible items filter to only include items visible from outside the library (no private or internal members, and document protected internal members as protected)
Updated NuGet package specification

- Updated description and release notes link
- Add XML schema so IntelliSense works with the nuspec file
- Explicitly reference the transformed XML documentation so IntelliSense information is complete