- modified the way the status bar icon is set

- Drilling Tool - fixed missing feedrate code when the toolchange is Off
- AppTextEditor - working on syntax highlighting
- App - trying to speed up the new project creation
- Tcl Shell - Browser Edit - added Undo/Redo, Cut and Delete selection
- replace all the exec_() calls with exec() (except one situation in Tcl where I'm not sure of the effect)

appGUI/preferences/PreferencesUIManager.py

@@ -953,7 +953,7 @@ class PreferencesUIManager:
             msgbox.addButton(_('Cancel'), QtWidgets.QMessageBox.NoRole)
 
             msgbox.setDefaultButton(bt_yes)
-            msgbox.exec_()
+            msgbox.exec()
             response = msgbox.clickedButton()
 
             if theme_new_val != theme:
@@ -1201,7 +1201,7 @@ class PreferencesUIManager:
             msgbox.addButton(_('No'), QtWidgets.QMessageBox.NoRole)
 
             msgbox.setDefaultButton(bt_yes)
-            msgbox.exec_()
+            msgbox.exec()
             response = msgbox.clickedButton()
 
             if response == bt_yes: