Refactoring

[rshk]

Refactor the library by:

• removing all the director-related stuff
• removing all the part that is now being managed by jobcontrol
• likely, even remove the plugin stuff for everything but the storage
• split the storage abstraction into a separate project
  • improve the storage, eg. allow file-like interface for storing "blobs"
• split the "odt" part in its own project
• remove everything that's no longer needed