feat(i18n): replace hardcoded messages with translated strings (#289)

http/middleware/admin_privilege.go

@@ -12,7 +12,7 @@ func AdminPrivilege() gin.HandlerFunc {
 		u := service.AllService.UserService.CurUser(c)
 
 		if !service.AllService.UserService.IsAdmin(u) {
-			response.Fail(c, 403, "无权限")
+			response.Fail(c, 403, response.TranslateMsg(c, "NoAccess"))
 			c.Abort()
 			return
 		}