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

* 'master' of git://github.com/melinath/philo:
  Added markdown-formatted README, and added a note to the readme re: the IRC channel. Removed the replace_sender_response function as it was a terrible abomination that was bound to encourage hackish solutions.
  Improved NodeAdmin list_display options. Added use of default validators to JSONField and JSONFormField.
  Simplified waldo's AccountMultiView to rely just on an AccountForm rather than a complicated mix of a UserForm and an AccountForm generated based on a number of attributes.
  Minor correction to TreeModel.get_path to allow for subclasses that use an alternate level attribute. Minor correction to TreeManager.get_with_path to only return root as the deepest node if there is actually no deepest_found node. Added MultiView.reverse() shortcut method to handle the common pattern of getting the absolute url for the subpath of a multiview. Adjusted waldo MultiViews to use their reverse() method. Added make_confirmation_link() method to LoginMultiView to provide a standard, reusable way to handle this task. Brought waldo's multiview get_context method use in line with penfield by removing the optional extra dictionary passed in.
  Minor correction to embed template tag: updating the context adds an additional context layer, which means the explicitly pushed layer was never popped.
  Minor changes to penfield to return feed urls only when feeds are actually enabled and to allow BlogEntry.objects.latest(). Corrected TreeManager.get_with_path to return the root node (if defined) as the deepest node if nothing else is found along the path. Removed embed tag error raising for an expected behavior.
  Minor corrections to node_url and embed templatetags to avoid raising unnecessary errors.
  Corrected embed handling to ignore embedded instances which do not appear in the context.
  Further polished embedding system - allowed for context-dependent embed nodes to be correctly added to the embed context and to correctly render in extending templates even if not within blocks. Added notes to README about how to use philo. Fixed docstring typo for {% node_url %} templatetag.
  Improved the initial mptt migration by adding automated tree rebuilds.