Fix lint and addd some comments about the copied codes.

Author: lunny

modules/middlewares/cookie.go

@@ -26,6 +26,7 @@ func NewCookie(name, value string, maxAge int) *http.Cookie {
 }
 
 // SetCookie set the cookies
+// TODO: Copied from gitea.com/macaron/macaron and should be improved after macaron removed.
 func SetCookie(resp http.ResponseWriter, name string, value string, others ...interface{}) {
 	cookie := http.Cookie{}
 	cookie.Name = name

modules/middlewares/redis.go

@@ -28,6 +28,7 @@ import (
 )
 
 // RedisStore represents a redis session store implementation.
+// TODO: copied from modules/session/redis.go and should remove that one until macaron removed.
 type RedisStore struct {
 	c           redis.UniversalClient
 	prefix, sid string

modules/middlewares/virtual.go

@@ -17,6 +17,7 @@ import (
 )
 
 // VirtualSessionProvider represents a shadowed session provider implementation.
+// TODO: copied from modules/session/redis.go and should remove that one until macaron removed.
 type VirtualSessionProvider struct {
 	lock     sync.RWMutex
 	provider session.Provider

modules/templates/static.go

@@ -48,6 +48,7 @@ func (templates templateFileSystem) Get(name string) (io.Reader, error) {
 	return nil, fmt.Errorf("file '%s' not found", name)
 }
 
+// GetAsset get a special asset, only for chi
 func GetAsset(name string) ([]byte, error) {
 	bs, err := ioutil.ReadFile(filepath.Join(setting.CustomPath, name))
 	if err != nil && !os.IsNotExist(err) {