Add: Remember the last used theme (#821)

- Add: Password in deploy config
- Opt: Parse yaml value null into None

module/webui/lang.py

@@ -59,7 +59,4 @@ def reload():
 
     for key in dic_lang["ja-JP"].keys():
         if dic_lang["ja-JP"][key] == key:
-            dic_lang["ja-JP"][key] = dic_lang["en-US"][key]
-
-    global LANG
-    LANG = WebuiConfig().Language
+            dic_lang["ja-JP"][key] = dic_lang["en-US"][key]