- cleaned up main menu:
 * cleaned up code, including exporter and stores dynamic adding
 * cleaned up and join the different templates into one

- added "makeFileActive" method and system to the project class:
 * only one file is active at a time (this need to be the case both for UI and for code injection) so
added a system to set a "isActive" flag on file, via the project
 * works : added tests
 * not used yet in the views and systems that need it

- various old unused file deletion and log messages cleanup