- for all the plugins optimized the plugin name
- renamed the app to FlatCAM Evo in order to make a difference from FlatCAM app which follows its own path
- modified the splash image to reflect the new naming of the app
- modified some of the documents (License, Readme) in the app to reflect the actual reality in 2021
- 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