增加新词条 增加是否为网络认证的词条

backend/SystemUpdater/backend/InstallBackendAptdaemon.py

@@ -405,6 +405,7 @@ class InstallBackendAptdaemon(InstallBackend):
         if self.action == self.ACTION_REMOVE_PACKAGES:
             return
 
+        if self.action != self.ACTION_UPDATE:
             logging.info("\033[1;32m" + "Emitting" + "\033[0m" +" Cancelable: %r",Cancelable) 
         self.window_main.dbusController.Cancelable(Cancelable)
         #增加取消信号的频发机制

backend/SystemUpdater/backend/__init__.py

@@ -484,6 +484,9 @@ class InstallBackend():
         elif action == self.ACTION_UPDATE:
             if success == False and 'The following signatures' in self.trans_error_details:
                 error_desc = _("Check your source public key signature")
+            elif success == False and 'does the network require authentication?' in self.trans_error_details:
+                error_desc = _("Check if your network requires authentication?")
+            
             if success:
                 #开始生成列表
                 self.window_main.start_available()

backend/po/zh_CN.po

@@ -2559,6 +2559,8 @@ msgstr "无法访问源管理服务器，请稍后再试"
 msgid "Connection exception with push server"
 msgstr "推送服务器连接异常"
 
+msgid "Check if your network requires authentication?"
+msgstr "检查您的网络需要认证吗？"
 
 msgid "Check your source public key signature"
 msgstr "检查您的源数字签名"