Show max 100 recently pushed repos for each org

Limit the number of repositories displayed for each org to the 100 most
recently pushed ones. This should stop organizations with 1000s of
repositories from having a disproportional impact on the load time.

Author: jcansdale

src/GitHub.App/Services/RepositoryCloneService.cs

@@ -4,6 +4,7 @@
 using System.IO;
 using System.Linq;
 using System.Reactive.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using GitHub.Api;
 using GitHub.Extensions;
@@ -69,8 +70,8 @@ public async Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress ad
             {
                 var order = new RepositoryOrder
                 {
-                    Field = RepositoryOrderField.Name,
-                    Direction = OrderDirection.Asc
+                    Field = RepositoryOrderField.PushedAt,
+                    Direction = OrderDirection.Desc
                 };
 
                 var affiliation = new RepositoryAffiliation?[]
@@ -100,8 +101,8 @@ public async Task<ViewerRepositoriesModel> ReadViewerRepositories(HostAddress ad
                         Organizations = viewer.Organizations(null, null, null, null).AllPages().Select(org => new
                         {
                             org.Login,
-                            Repositories = org.Repositories(null, null, null, null, null, null, null, order, null, null)
-                                .AllPages()
+                            Repositories = org.Repositories(100, null, null, null, null, null, null, order, null, null)
+                                .Nodes
                                 .Select(repositorySelection).ToList()
                         }).ToDictionary(x => x.Login, x => (IReadOnlyList<RepositoryListItemModel>)x.Repositories),
                     }).Compile();