- fixed a crash when creating a Document object due of changes in Qt6 (missing QtGui.Qt)

- in Document object fixed the issue with not setting selection color when in a dark theme (essentially got rid of using QPalette)
- in dark theme stylesheet changed the indent of the QCheckBox (and in Radio buttons too)
- updated the FClabel widget with some more properties
- updated the hack to make sure that the Editor sub-tools do not lose the stylesheet of the background
- updated the disabled project item color default value for the dark theme

appPlugins/ToolRulesCheck.py

@@ -99,7 +99,7 @@ class RulesCheck(AppTool):
             if self.app.ui.splitter.sizes()[0] == 0:
                 self.app.ui.splitter.setSizes([1, 1])
 
-        AppTool.run(self)
+        super().run()
         self.set_tool_ui()
 
         self.app.ui.notebook.setTabText(2, _("Check Rules"))