Implemented IUrlValidator with IBaseUrlProvider
Moved url validation to action result factory
Added xml comments to SitemapImage
Added missing news tags
Updated xml comments and renamed sample files
Merged sitemap node tests
Refactored sitemap image tests
Rafactored sitemap index node tests
Refactored remaining serializer tests
Added mobile support
Implemented UrlValidatorIntegrationTests
Added xml documentation files
SitemapVideo required parameter constructors
Added xml comments to VideoRestriction