Adding option to not show the cover in viewer
Adding postimport plugin call to manual add
Adding option to auto add metadata on import

Coordinating add actions so that convert waits for metadata adding

Narrowing the metadata download modification check to avoid checking for changes in custom metadata (which is not downloaded or overwritten)

Adding option to clear IDs before metadata download (to obtain the default edition)

Adding option to not confirm before updating metadata in library
Changing default book table home/end scrolling from horizontal to vertical
Adding missing directory creation to `build`
Adding missing directory creation to `linux_freeze`
Changing winutil makefile path from python26 to python27
Making Windows build archive folders extractable

Removing unnecessary slash replace