- replaced some icons in the app
- in Code Editor, when changing text, the Save Code button will change color (text and icon) to red and after save it will revert the color to the default one
- in Code Editor some methods rework
- moved all the 'share' resources (icons) to the 'assets/resources' folder
- some more fixes to problems generated by latest changes in the open handlers
- modified the make_freezed.py script for the new location of the icons
- added a fix for the ConnectionRefusedError in Linux that is issued when first running after a FlatCAM crash