Milo buildbot builder page: Add pagnation with cursors.

milo/appengine/buildbot/console.go

Index: milo/appengine/buildbot/console.go
diff --git a/milo/appengine/buildbot/console.go b/milo/appengine/buildbot/console.go
index b77d6a4bbe3ff42fa80c29d3a17ca980e9c2112c..a6d9a0ee5006399e25edef254a57f0e6152fba98 100644
--- a/milo/appengine/buildbot/console.go
+++ b/milo/appengine/buildbot/console.go
@@ -24,11 +24,10 @@ func getFullBuilds(c context.Context, masterName, builderName string, finished b
 	q = q.Eq("finished", finished)
 	q = q.Eq("master", masterName)
 	q = q.Eq("builder", builderName)
-	q = q.Limit(25) // TODO(hinoka): This should be adjustable
 	q = q.Order("-number")
 	q.Finalize()
-	buildbots := make([]*buildbotBuild, 0, 25)
-	err := getBuildQueryBatcher(c).GetAll(c, q, &buildbots)
+	// Ignore the cursor, we don't need it.
+	buildbots, _, err := runBuildsQuery(c, q, 25)
 	return buildbots, err
 }