Refactor packages to have more idiomatic code base

server/ui/controller/icon.go

@@ -1,33 +0,0 @@
-// Copyright 2017 Frédéric Guillot. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package controller
-
-import (
-	"time"
-
-	"github.com/miniflux/miniflux/server/core"
-)
-
-// ShowIcon shows the feed icon.
-func (c *Controller) ShowIcon(ctx *core.Context, request *core.Request, response *core.Response) {
-	iconID, err := request.IntegerParam("iconID")
-	if err != nil {
-		response.HTML().BadRequest(err)
-		return
-	}
-
-	icon, err := c.store.IconByID(iconID)
-	if err != nil {
-		response.HTML().ServerError(err)
-		return
-	}
-
-	if icon == nil {
-		response.HTML().NotFound()
-		return
-	}
-
-	response.Cache(icon.MimeType, icon.Hash, icon.Content, 72*time.Hour)
-}