changed setting to use bool instead of int

src/ui/dialogs/mail.py

@@ -69,7 +69,7 @@ class Mail_Dialog(QtWidgets.QDialog, Ui_Dialog):
     #     self.data = data["general"]
 
     def determine_signature(self):
-        if config.mail.signature == None:
+        if config.mail.signature is None:
             return """Mit freundlichen Grüßen
 Ihr Semesterapparatsteam
 Mail: semesterapparate@ph-freiburg.de
@@ -151,7 +151,7 @@ Tel.: 0761/682-778"""
         server = smtplib.SMTP_SSL(smtp_server, port)
         # server.starttls()
         # server.auth(mechanism="PLAIN")
-        if config["mail"]["use_user_name"] == 1:
+        if config["mail"]["use_user_name"] is True:
             print(config["mail"]["user_name"])
             server.login(config["mail"]["user_name"], password)
         else: