Refactor code for generating HTML navigation top with dynamic file ex…

…tensions.

- Fix logo and home links to correctly include file extension.
- Update file names to use GlobalSchema information for consistency.

Public/New-HTMLNavTop.ps1

@@ -37,10 +37,10 @@
         $Script:CurrentConfiguration['Features']['NavigationMenuDropdown']['HeaderAlways']['CssInLine']['@media only screen and (min-width: 480px)']['.has-child ul']['width'] = $MenuItemsWidth
 
         if ($LogoLinkHome) {
-            $LogoLink = "$($Script:GlobalSchema.StorageInformation.FileName).html"
+            $LogoLink = "$($Script:GlobalSchema.StorageInformation.FileName)$($Script:GlobalSchema.StorageInformation.Extension)"
         }
         if ($HomeLinkHome) {
-            $HomeHref = "$($Script:GlobalSchema.StorageInformation.FileName).html"
+            $HomeHref = "$($Script:GlobalSchema.StorageInformation.FileName)$($Script:GlobalSchema.StorageInformation.Extension)"
         }
     }