Merge branch 'master' of git://github.com/melinath/philo

* 'master' of git://github.com/melinath/philo:
  Added scheduled posting of blog entries and newsletter articles. Implements feature #153.
  Added Content-Disposition header to File's response - keeps the name of the file separate from the node's slug. Further resolves issue #136.
  Added name field to File for easier finding in the database. Added automatic mimetype generation for users who don't understand what that means. ;-) Resolves (partially) issue #136.
  Added AttributeMapper caching to entity.attributes, since anyone who really needs no caching can clear the cache manually. Switched _populate to _fill on all AttributeMappers. Resolves feature #73.