Hide some user information via API if user have no enough permission (#8655)

* Hide some user information via API if user have no enough permission

* fix test

integrations/api_team_user_test.go

 	var user2 *api.User
 	DecodeJSON(t, resp, &user2)
 	user2.Created = user2.Created.In(time.Local)
-	user2.LastLogin = user2.LastLogin.In(time.Local)
 	user := models.AssertExistsAndLoadBean(t, &models.User{Name: "user2"}).(*models.User)
 
 	assert.Equal(t, convert.ToUser(user, true, false), user2)

routers/api/v1/convert/convert.go

 // ToUser convert models.User to api.User
 func ToUser(user *models.User, signed, authed bool) *api.User {
 	result := &api.User{
-		ID:        user.ID,
 		UserName:  user.Name,
 		AvatarURL: user.AvatarLink(),
 		FullName:  markup.Sanitize(user.FullName),
-		IsAdmin:   user.IsAdmin,
-		LastLogin: user.LastLoginUnix.AsTime(),
 		Created:   user.CreatedUnix.AsTime(),
 	}
 	// hide primary email if API caller isn't user itself or an admin
 		result.Email = ""
 	} else if user.KeepEmailPrivate && !authed {
 		result.Email = user.GetEmail()
-	} else {
+	} else { // only user himself and admin could visit these information
+		result.ID = user.ID
 		result.Email = user.Email
+		result.IsAdmin = user.IsAdmin
+		result.LastLogin = user.LastLoginUnix.AsTime()
 	}
 	return result
 }