[milo] get console in working shape.

milo/frontend/view_console.go

Index: milo/frontend/view_console.go
diff --git a/milo/frontend/view_console.go b/milo/frontend/view_console.go
index 1150d21d4f9abb01e8dc46f1aa082cdd1673e387..6106e95107353eda94a92c5fb1d138734d000bba 100644
--- a/milo/frontend/view_console.go
+++ b/milo/frontend/view_console.go
@@ -67,7 +67,8 @@ func console(c context.Context, project, name string) (*resp.Console, error) {
 	for i, b := range def.Builders {
 		builderNames[i] = b
 		builders[i].Name = b
-		// TODO(hinoka): Add Categories and ShortNames back in.
+		_, _, builders[i].ShortName, _ = buildsource.BuilderID(b).Split()
+		// TODO(hinoka): Add Categories back in.
 	}
 
 	commitNames := make([]string, len(commitInfo.Commits))