[milo] Refactor all html knowledge out of backends.

milo/frontend/console/html.go

-// Copyright 2016 The LUCI Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package console
-
-import (
-        "net/http"
-
-        "github.com/luci/luci-go/milo/common"
-        "github.com/luci/luci-go/server/router"
-        "github.com/luci/luci-go/server/templates"
-)
-
-// ConsoleHandler renders the console page.
-func ConsoleHandler(c *router.Context) {
-        project := c.Params.ByName("project")
-        if project == "" {
-                common.ErrorPage(c, http.StatusBadRequest, "Missing Project")
-                return
-        }
-        name := c.Params.ByName("name")
-
-        result, err := console(c.Context, project, name)
-        if err != nil {
-                common.ErrorPage(c, http.StatusInternalServerError, err.Error())
-                return
-        }
-
-        templates.MustRender(c.Context, c.Writer, "pages/console.html", templates.Args{
-                "Console": result,
-        })
-}