fix two missing arguments, fixing reordering of newly installed plugins (#412)

backend/injector.py

@@ -111,7 +111,7 @@ class Tab:
             "method": "Page.disable",
         }, False)
 
-    async def refresh(self):
+    async def refresh(self, manage_socket=True):
         try:
             if manage_socket:
                 await self.open_websocket()

backend/settings.py

@@ -52,7 +52,7 @@ class SettingsManager:
         with open(self.path, "w+", encoding="utf-8") as file:
             dump(self.settings, file, indent=4, ensure_ascii=False)
 
-    def getSetting(self, key, default):
+    def getSetting(self, key, default=None):
         return self.settings.get(key, default)
 
     def setSetting(self, key, value):