Maintain correct records in History and Favorites when moving/deleting folders or group of files.
Optimize Collection module to minimize storage requests.
* Tear down FM instances properly
* Don't manhandle ReaderUI too much, and document when the tests do
actively broken shit, like bypassing safeties to open two // ReaderUI
instances.
* Allow running Shell/Python scripts from the FM
* Show an InfoMessage before/after running the script
Since we're blocking the UI ;).
* Allow running scripts from the favorites menu, too.
