have SIGINT handler call modules' shutdown()

modules/IrcAdmin.py

@@ -225,6 +225,9 @@ class IrcAdmin(Module):
 
     # SIGINT signal handler
     def sigint_handler(self, signal, frame):
+        for module in self.modlist:
+            module.shutdown()
+
         self.save_config()
         print('saved config')
         sys.exit()