fix: Set "show hidden files" button value before connecting it to its…

… slot

The problem was that the value/state of the button "Show hidden files" was set after it was connected to its slot. This triggered some other events in the main window that couldn't be processed correct because that main window itself was not finished with its construction yet.
Solution: Set the value of that button first and then connect it to its slot.

Fix:(#1536

CHANGES

@@ -1,7 +1,7 @@
 Back In Time
 
 Version 1.4.1-dev (development of upcoming release)
-* wip
+* Fix bug: GUI didn't start when show hidden files button was on (#1535).
 
 Version 1.4.0 (2023-09-14)
 * Project: Renamed branch "master" to "main" and started "gitflow" branching model.

qt/app.py

@@ -596,9 +596,9 @@ def _create_actions(self):
         self.act_pause_take_snapshot.setVisible(False)
         self.act_resume_take_snapshot.setVisible(False)
         self.act_stop_take_snapshot.setVisible(False)
-        self.act_show_hidden.toggled.connect(self.btnShowHiddenFilesToggled)
         self.act_show_hidden.setCheckable(True)
         self.act_show_hidden.setChecked(self.showHiddenFiles)
+        self.act_show_hidden.toggled.connect(self.btnShowHiddenFilesToggled)
 
     def _create_shortcuts_without_actions(self):
         """Create shortcuts that are not related to a visual element in the