Added an option to specify demo user, will be created on startup if it does not exist

internal/routes/appinfo.go

@@ -11,5 +11,6 @@ func GetAppInfo(ac appcontext.AppContext) {
 	ac.C.JSON(http.StatusOK, dto.AppInfo{
 		RegistrationDisabled: ac.Config.DisableRegistration,
 		DemoMode:             ac.Config.DemoMode,
+		DemoUsername:         ac.Config.DemoUsername,
 	})
 }

internal/routes/userlogin.go

@@ -34,7 +34,7 @@ func PostLoginHandler(ac appcontext.AppContext) {
 		}
 		username = user.Username
 	} else {
-		username = "demo"
+		username = ac.Config.DemoUsername
 	}
 
 	var jwtToken string