Move entirely to 19H1 branding

BuildFeed.Model/Build.cs

@@ -188,7 +188,7 @@ namespace BuildFeed.Model
             // move on to version number guesses
             else if (Number >= 18200)
             {
-                Family = ProjectFamily.Redstone6;
+                Family = ProjectFamily.SAR_19H1;
             }
             else if (Number >= 17600)
             {

BuildFeed.Model/BuildRepository.cs

@@ -164,7 +164,10 @@ namespace BuildFeed.Model
         {
             var families = new Dictionary<ProjectFamily, FrontPage>();
 
-            var query = _buildCollection.Aggregate()
+            var query = _buildCollection.Aggregate(new AggregateOptions
+                {
+                    AllowDiskUse = true
+                })
                 .Match(new BsonDocument
                 {
                     {

BuildFeed.Model/ProjectFamily.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+// ReSharper disable InconsistentNaming
 
 namespace BuildFeed.Model
 {
@@ -57,7 +58,7 @@ namespace BuildFeed.Model
         [Display(Name = "Redstone 5")]
         Redstone5 = 70,
 
-        [Display(Name = "Redstone 6 / 19H1")]
-        Redstone6 = 80
+        [Display(Name = "19H1")]
+        SAR_19H1 = 80 // SAR = Semi-Annual Release
     }
 }