Milo: Use custom config caching layer

milo/appengine/frontend/frontpage.go

Index: milo/appengine/frontend/frontpage.go
diff --git a/milo/appengine/frontend/frontpage.go b/milo/appengine/frontend/frontpage.go
index 249e062dc4b3e1f30db415d60b7b2ca34c2f44d5..987d16f1722b648aebf598f107424121e7d22b6a 100644
--- a/milo/appengine/frontend/frontpage.go
+++ b/milo/appengine/frontend/frontpage.go
@@ -5,8 +5,6 @@
 package frontend
 
 import (
-	"net/http"
-
 	"github.com/luci/luci-go/server/router"
 	"github.com/luci/luci-go/server/templates"
 
@@ -31,15 +29,12 @@ func frontpageHandler(c *router.Context) {
 			return err
 		}
 	})
-	if err != nil {
-		common.ErrorPage(c, http.StatusInternalServerError, err.Error())
-		return
-	}
 
 	fp.CIServices = append(fp.CIServices, *mBuildbucket)
 	fp.CIServices = append(fp.CIServices, *mBuildbot)
 	templates.MustRender(c.Context, c.Writer, "pages/frontpage.html", templates.Args{
 		"frontpage": fp,
+		"errors":    err.Error(),

[nodir, 2017/04/04 23:12:08]

this looks like one error, a string. Why it is called errors? If you want to
support multiple errors, maybe make a slice

[hinoka, 2017/04/05 20:45:07]

Done.

 	})
 }