Pro ASP.Net MVC 5 - SportsStore - Ch 08 - Custom Routing to Support New Nav

Added some custom routing to support categories, the basis of the new nav.
Pro ASP.Net MVC 5 - SportsStore - Ch 08 - Created Nav Controller

Created something simple for now, and added it to the layout.
Pro ASP.Net MVC 5 - SportsStore - Ch 08 - Added New Nav

The nav partial view is complete and integrated.
Pro ASP.Net MVC 5 - SportsStore - Ch 08 - Denoting Selected Nav Item

The selected nav item is now highlighted. A unit test is in place to check it.
Need to fix the inaccurate paging when filtering by category.
Pro ASP.Net MVC 5 - SportsStore - Ch 08 - Corrected Item Counts for Pagination

With the correct item counts being reported when items are filtered, the
pagination now works corrected. Added a test to verify the counts are correct.