Fixes #168, update priority not showing up in sitemap.xml
Merge branch 'v4' of github.com:maartenba/MvcSiteMapProvider into v4
Fixed preserved route parameters so it will function (#154). Moved the preserve functionality from SiteMapNodeUrlResolver to SiteMapNode. Fixed DynamicNode so it will merge preserved route params correctly.
Fixed the route comparison logic so it compares with the RouteValues only instead of Attributes + RouteValues (#6, #61).
Added unit/integration test project to the solution.
Fixes #165, spaces not allowed after comma in xml attributes that accept multiple values.
Merge remote-tracking branch 'maartenba/v4' into v4

Conflicts:
	src/MvcSiteMapProvider/MvcSiteMapProvider.sln
	src/MvcSiteMapProvider/MvcSiteMapProvider/Web/Mvc/XmlSiteMapResult.cs