fix: allow using refresh button after timeout events (#484)

dzgui/model/servers.py

@@ -92,6 +92,7 @@ class ServerModelManager:
         job = Servers.query_api
         params = Servers.params
         servers = []
+
         with ThreadPoolExecutor() as executor:
             futures = [executor.submit(job, key, APPID_DAYZ, param) for param in params]
             for future in as_completed(futures):
@@ -414,6 +415,8 @@ class ServerModelManager:
         # TODO: disable map, keyword, and filter widgets if model is None
         # signal driven (servers_empty, servers_failed_to_load)
 
+        self.emitter.emit("servers_timed_out")
+
         if self.preserve_on_fail is False:
             self.tv.set_model(None)
             filter_man = self.tv.get_filter_man()