Changed main window info data save to work with sql db
Fixed title animation while adding new books
Set book discarding method to remove book files instead of directories and it will also delete the DB  entry for the  deleted book
Various fixes
Better exception handling in couple of places
Empty directory sweep added to structuresync method
Added F12 hotkey to delete the info queue
Added time to messages saved into debug log
Vastly sped up the LibraryStructure.List() function
Ïnfo method moved into separated file
Code for busy indication moved into one  static method