Added/Fixed Renaming/Copying/Moving Options

Implemented destination folder/file renaming structure based on user input.
"Keep original files" in configuration now works properly via move or copy.
"Ebook Type" now does something... (all file extensions not in list get deleted)
Still not happy that destination (non-Calibre) path gets nuked for this process to work.
--This needs to get fixed in future upgrades.