Merge pull request #2 from NiLuJe/master

Some minor tweaks & calibre import improvements
Updated KUAL menu entries.
Preparation for syncing directly the epub files,  without converting to mobi first.
Faster log  display for LibrarianSync. It only sleeps when necessary, to prevent flickering.
Finally used argparse in generate_collections.py. Updated menu.json.
Librarian can now sync to any directory (epubs) or to kindle (mobis).
Now generating .bin for all kindle5 devices. The config.xml is also updated with the version number.
Librarian can now serve selected ebooks over http, and LibrarianSync can download them automatically.
Added checking for version number before building the package.